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#76
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Bt pesticide resistance
"Torsten Brinch" wrote in message ... On Sat, 30 Aug 2003 02:01:27 GMT, "Gordon Couger" wrote: "Torsten Brinch" wrote in message .. . On Fri, 29 Aug 2003 21:42:10 GMT, "Gordon Couger" wrote: All the data points used in the study except the discarded ones are in the paper. That should be enough to duplicate the statistics. Um. The plotted points you see in the graphics, and the numbers in tables are not raw values, they are means (n=3), three replicates per treatment and sampling date. However, apparently it is your hypothesis while looking at these data points, that they are not all there, that some data points have been discarded. But hey, that should be easily verifiable. Check, and you should find for some sampling dates in plots and tables, that data points are missing. :-) Unfortunately for your hypothesis, they are all there. There is no hypothesis the paper clearly states outliers are discarded. I am talking about your hypothesis that "data that didn't agree with the findings was discarded". God help you, if you have nothing else to base this on, than what is clearly stated in the paper, that outliers in raw data were removed from datasets before variance homogenity of data was evaluated in residual plots. Whatever you may think of removal of outliers at this particular stage in the statistical analysis, it obviously does not and cannot constitute the authors discarding of data that doesn't agree with the findings. There are no findings at this stage, just a mass of raw values, unfitted to any model, untested for any significant differences between them. You have no idea when the data was discarded. It may have been when it was found to be inconvenient in the statistical calculations. The results had been quoted many times before any work was done. Who knows in what order the work were done. Gordon |
#77
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Bt pesticide resistance
"Torsten Brinch" wrote in message ... On Sat, 30 Aug 2003 02:01:27 GMT, "Gordon Couger" wrote: "Torsten Brinch" wrote in message .. . On Fri, 29 Aug 2003 21:42:10 GMT, "Gordon Couger" wrote: All the data points used in the study except the discarded ones are in the paper. That should be enough to duplicate the statistics. Um. The plotted points you see in the graphics, and the numbers in tables are not raw values, they are means (n=3), three replicates per treatment and sampling date. However, apparently it is your hypothesis while looking at these data points, that they are not all there, that some data points have been discarded. But hey, that should be easily verifiable. Check, and you should find for some sampling dates in plots and tables, that data points are missing. :-) Unfortunately for your hypothesis, they are all there. There is no hypothesis the paper clearly states outliers are discarded. I am talking about your hypothesis that "data that didn't agree with the findings was discarded". God help you, if you have nothing else to base this on, than what is clearly stated in the paper, that outliers in raw data were removed from datasets before variance homogenity of data was evaluated in residual plots. Whatever you may think of removal of outliers at this particular stage in the statistical analysis, it obviously does not and cannot constitute the authors discarding of data that doesn't agree with the findings. There are no findings at this stage, just a mass of raw values, unfitted to any model, untested for any significant differences between them. You have no idea when the data was discarded. It may have been when it was found to be inconvenient in the statistical calculations. The results had been quoted many times before any work was done. Who knows in what order the work were done. Gordon |
#78
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Bt pesticide resistance
On Sun, 31 Aug 2003 09:00:17 GMT, "Gordon Couger"
wrote: "Torsten Brinch" wrote in message .. . On Sat, 30 Aug 2003 02:01:27 GMT, "Gordon Couger" wrote: There is no hypothesis the paper clearly states outliers are discarded. I am talking about your hypothesis that "data that didn't agree with the findings was discarded". God help you, if you have nothing else to base this on, than what is clearly stated in the paper, that outliers in raw data were removed from datasets before variance homogenity of data was evaluated in residual plots. Whatever you may think of removal of outliers at this particular stage in the statistical analysis, it obviously does not and cannot constitute the authors discarding of data that doesn't agree with the findings. There are no findings at this stage, just a mass of raw values, unfitted to any model, untested for any significant differences between them. You have no idea when the data was discarded. Come, the statistical analysis section in the paper clearly describes the series of steps taken in the analysis, in the order they were taken. How can anyone read that section with comprehension and escape with no idea when outliers were removed from raw data? It may have been when it was found to be inconvenient in the statistical calculations. snip And, what is the relation, if any, between this hypothesis, and your original hypothesis that "data that didn't agree with the findings was discarded"? I mean, are you just re-expressing that original hypothesis in a fuzzy low-key manner, or are you referring to some inconvenience of having a gross outlier in a residual plot? |
#79
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Bt pesticide resistance
"Torsten Brinch" wrote in message ... On Sun, 31 Aug 2003 09:00:17 GMT, "Gordon Couger" wrote: "Torsten Brinch" wrote in message .. . On Sat, 30 Aug 2003 02:01:27 GMT, "Gordon Couger" wrote: There is no hypothesis the paper clearly states outliers are discarded. I am talking about your hypothesis that "data that didn't agree with the findings was discarded". God help you, if you have nothing else to base this on, than what is clearly stated in the paper, that outliers in raw data were removed from datasets before variance homogenity of data was evaluated in residual plots. Whatever you may think of removal of outliers at this particular stage in the statistical analysis, it obviously does not and cannot constitute the authors discarding of data that doesn't agree with the findings. There are no findings at this stage, just a mass of raw values, unfitted to any model, untested for any significant differences between them. You have no idea when the data was discarded. Come, the statistical analysis section in the paper clearly describes the series of steps taken in the analysis, in the order they were taken. How can anyone read that section with comprehension and escape with no idea when outliers were removed from raw data? It may have been when it was found to be inconvenient in the statistical calculations. snip And, what is the relation, if any, between this hypothesis, and your original hypothesis that "data that didn't agree with the findings was discarded"? I mean, are you just re-expressing that original hypothesis in a fuzzy low-key manner, or are you referring to some inconvenience of having a gross outlier in a residual plot? When the findings are used in a fraudulent manner before the work that the paper is written from is preformed am strongly suspicious of the paper and all connect to it. When the statistical claims they make don't agree with the data they publish I am more cynical about it. I went to the effort ot have experts look at the paper and they came to the same conclusions and you can call OSU like I did and find out what Ms. Ingram's relationship with them was when she claimed affiliation with them when she had none. Or you can look up her CV and it verifies her employment dates at OSU and shows she was not working for them and only had courtesy privileges. You can get courtesy privileges at any land grant university by just asking. If you can make that pig of a paper sing by making the statistics work I will continue the discussion. Gordon |
#80
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Bt pesticide resistance
On Sun, 31 Aug 2003 20:45:07 GMT, "Gordon Couger"
wrote: When the findings are used in a fraudulent manner before the work that the paper is written from is preformed am strongly suspicious of the paper and all connect to it. But, that's highly circumstantial, is it not, if you want to prove abominable discarding of data? :-) However, let's see your evidence for the claim that findings of the paper were used, before the work that the paper is written from was performed. When the statistical claims they make don't agree with the data they publish I am more cynical about it. You must be more specific, or noone will know what you are critisising. Which statistical claims don't agree with which data? If you can't answer that, you do not have a critique of substance worth relating to. I went to the effort ot have experts look at the paper and they came to the same conclusions Understand that unidentified experts making unidentified conclusions that happens to agree with whatever you say just doesn't cut it. and you can call OSU like I did and find out what Ms. Ingram's relationship with them snip Ms. Inghams affiliation is irrelevant to the question, if data points was discarded that did not agree with the findings in that paper. If you can make that pig of a paper sing by making the statistics work I will continue the discussion. That's very kind of you. However don't you think it is about time you coughed up some evidence for your claim that data that did not agree with findings was discarded? How many times have you been asked for that now. Five, seven times? |
#81
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Bt pesticide resistance
"Torsten Brinch" wrote in message ... On Sun, 31 Aug 2003 20:45:07 GMT, "Gordon Couger" wrote: When the findings are used in a fraudulent manner before the work that the paper is written from is preformed am strongly suspicious of the paper and all connect to it. But, that's highly circumstantial, is it not, if you want to prove abominable discarding of data? :-) However, let's see your evidence for the claim that findings of the paper were used, before the work that the paper is written from was performed. When the statistical claims they make don't agree with the data they publish I am more cynical about it. You must be more specific, or noone will know what you are critisising. Which statistical claims don't agree with which data? If you can't answer that, you do not have a critique of substance worth relating to. I went to the effort ot have experts look at the paper and they came to the same conclusions Understand that unidentified experts making unidentified conclusions that happens to agree with whatever you say just doesn't cut it. and you can call OSU like I did and find out what Ms. Ingram's relationship with them snip Ms. Inghams affiliation is irrelevant to the question, if data points was discarded that did not agree with the findings in that paper. If you can make that pig of a paper sing by making the statistics work I will continue the discussion. That's very kind of you. However don't you think it is about time you coughed up some evidence for your claim that data that did not agree with findings was discarded? How many times have you been asked for that now. Five, seven times? I have no idea what the effect of the discarded data did to the study did. That's the point. Gordon |
#82
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Bt pesticide resistance
On Mon, 01 Sep 2003 03:30:41 GMT, "Gordon Couger"
wrote: I have no idea what the effect of the discarded data did to the study did. That's the point. Well, ask yourself what happens to a data set if you add an outlier to it: The overall variance in data increases, and the ANOVA may come out with either too low F-values to allow you to calculate a figure for least significant difference (LSD) or you may end up with an inflated figure for LSD. The effect of this may be that you will reject otherwise significant differences. Now turn that around: Without the outlier, finding significant differences will be more likely. In other words, you can reasonably suspect that those significant difference that are found without the outlier, might turn into insignificant differences with the outlier added back in. However, this study actually found very few significant differences, although some of those that were found were striking. The main findings, in short, was that plants in the GE bacteria setup turned chlorotic and wilted, apparently concomitant with a flush period of nematode growth during which nematodes reached higher numbers, and, with fungal feeding nematodes dominating. Compared to this plants in the non-GE bacteria setups,plants grew well, nematode numbers did not flush just as much, and bacterial feeding nematodes remained dominating. And here's the crunch, there is no way any discarding of outliers can have 'produced' the finding that plants in the GE bacteria setup wilted and died, while the plants in the nonGE bacteria setup grew. So, from a cool minded perspective, you may well have concerns as a matter of principle as regards handling of outliers, but you cannot have concerns that this handling has affected the main findings of the study. Quite generally, a criticism of a study, on counts that do not affect its main findings, is insubstantial. Perhaps some would call such criticism mere nitpicking, I would go that far, because it may well be educating. However, the point is, you can't 'kill' a study by flawing it of something that does not change its conclusions. |
#83
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Bt pesticide resistance
On Mon, 01 Sep 2003 03:30:41 GMT, "Gordon Couger"
wrote: "Torsten Brinch" wrote in message .. . On Sun, 31 Aug 2003 20:45:07 GMT, "Gordon Couger" wrote: When the findings are used in a fraudulent manner before the work that the paper is written from is preformed am strongly suspicious of the paper and all connect to it. ..let's see your evidence for the claim that findings of the paper were used, before the work that the paper is written from was performed. Let's see your evidence, Gordon. |
#84
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Bt pesticide resistance
In sci.agriculture Gordon Couger wrote:
"Torsten Brinch" wrote in message ... On Sun, 31 Aug 2003 20:45:07 GMT, "Gordon Couger" wrote: If you can make that pig of a paper sing by making the statistics work I will continue the discussion. That's very kind of you. However don't you think it is about time you coughed up some evidence for your claim that data that did not agree with findings was discarded? How many times have you been asked for that now. Five, seven times? I have no idea what the effect of the discarded data did to the study did. That's the point. No you need to be quite good at the subject to deal properly with outliers. I am thinking that sometimes people do not eliminate them when they should be, and others do but don't acknowledge it. Imagine you represent a conservative govt applying as little as possible health funding to a village of 100 people of mainly low income, based on whether they can pay for it themselves or not. When calculating the average will you include the income of the one multi-millionaire in the village? That would make the average income rather higher, so you can fund less. But the other 99 people would have no ability to pay, consequently. The place would become a real eyesore. Then if you were looking for how much the village could potentially donate to a cause would the high earner still be an outlier? If you were recording times for a cross country race would you include ones where runners had obviously taken a short cut or joined the race some way through it because they were rather briefer than really possible? (Memories of school cross-countries). Well you might if you were trying to catch cheats, or runners mistaken about the route. |
#85
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Bt pesticide resistance
On 1 Sep 2003 11:52:50 GMT, Brian Sandle
wrote: In sci.agriculture Gordon Couger wrote: "Torsten Brinch" wrote in message ... On Sun, 31 Aug 2003 20:45:07 GMT, "Gordon Couger" wrote: If you can make that pig of a paper sing by making the statistics work I will continue the discussion. That's very kind of you. However don't you think it is about time you coughed up some evidence for your claim that data that did not agree with findings was discarded? How many times have you been asked for that now. Five, seven times? I have no idea what the effect of the discarded data did to the study did. That's the point. No you need to be quite good at the subject to deal properly with outliers. I am thinking that sometimes people do not eliminate them when they should be, and others do but don't acknowledge it. Imagine you represent a conservative govt applying as little as possible health funding to a village of 100 people of mainly low income, based on whether they can pay for it themselves or not. When calculating the average will you include the income of the one multi-millionaire in the village? That would make the average income rather higher, so you can fund less. But the other 99 people would have no ability to pay, consequently. The place would become a real eyesore. But that's not an outlier problem, Brian. Indeed, there's not much of a statistical problem in it :-) You have sampled the whole population, you know the income of each and every individual in it, you know their average income. The average is the average. It is just not a very good descriptor for what the politicians want to describe. Then if you were looking for how much the village could potentially donate to a cause would the high earner still be an outlier? Yes. In that situation average income might be a more suitable descriptor. But again, this is not an outlier problem. The high earner is known to be part of the population studied, so the data point representing his income can never be considered an outlier. If you were recording times for a cross country race would you include ones where runners had obviously taken a short cut or joined the race some way through it because they were rather briefer than really possible? (Memories of school cross-countries). Well you might if you were trying to catch cheats, or runners mistaken about the route. That's more like it. If you observe from the recorded racing times that all racers completed the race within a time range of 3-7 hours, except one racer -- who has been recorded as completing it in 7 minutes -- that does raise the question if the racing time of this runner should not be consider an outlier. |
#86
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Bt pesticide resistance
In sci.agriculture Torsten Brinch wrote:
On 1 Sep 2003 11:52:50 GMT, Brian Sandle wrote: No you need to be quite good at the subject to deal properly with outliers. I am thinking that sometimes people do not eliminate them when they should be, and others do but don't acknowledge it. Imagine you represent a conservative govt applying as little as possible health funding to a village of 100 people of mainly low income, based on whether they can pay for it themselves or not. When calculating the average will you include the income of the one multi-millionaire in the village? That would make the average income rather higher, so you can fund less. But the other 99 people would have no ability to pay, consequently. The place would become a real eyesore. But that's not an outlier problem, Brian. Indeed, there's not much of a statistical problem in it :-) Except in that part of statistics is deciding what measures to use and what to measure. You have sampled the whole population, you know the income of each and every individual in it, you know their average income. The average is the average. It is just not a very good descriptor for what the politicians want to describe. Then you might change to the middle income. That might not work either if there is a big tail of very low incomes. Then if you were looking for how much the village could potentially donate to a cause would the high earner still be an outlier? Yes. In that situation average income might be a more suitable descriptor. But again, this is not an outlier problem. The high earner is known to be part of the population studied, so the data point representing his income can never be considered an outlier. So you might change from a purely latitude and longitude basis for the sample to some other. Perhaps it is the subset of employees in the region. Say you wanted to persuade people that potatoes in general are not high on solanine. How many sweet potatoes are you allowed in the sample? Given the figures the sweet potatoes might appear as outliers. This might lead back to calling into question whether a sweet potato is a potato. I think Gordon has a little point, that he needed to be told a bit more about the outlier categorizing. But when you search the web for how frequently `Monsanto' occurs in studies mentioning outliers, how much do you get? If you were recording times for a cross country race would you include ones where runners had obviously taken a short cut or joined the race some way through it because they were rather briefer than really possible? (Memories of school cross-countries). Well you might if you were trying to catch cheats, or runners mistaken about the route. That's more like it. If you observe from the recorded racing times that all racers completed the race within a time range of 3-7 hours, except one racer -- who has been recorded as completing it in 7 minutes -- that does raise the question if the racing time of this runner should not be consider an outlier. I think they used to be picked up in a car and dropped off again near the finish, to come in not suspiciously too early. In this case the finishing time is not an `adequate measure' of running ability. |
#87
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Bt pesticide resistance
On 28 Aug 2003 23:29:25 GMT, Brian Sandle
posted: In sci.agriculture Mooshie peas wrote: On 28 Aug 2003 14:23:53 GMT, Brian Sandle posted: Do you have the database of withdrawn applications and why they were withdrawn? A while back I referred to a submission by Jack Heineman against approval of another organisation's application for GM work in NZ. The other organisation withdrew the application. Was Dr Ingham's work, connected with the EPA, the cause of a dangerous or dubious application being withdrawn? No idea. You'll have to eyeball your regulator's documentation, I would think. That's right, where do they keep the records of withdrawn applications and what has caused the withdrawal? I suspect a bash at Google would find some information about this if it was at all interesting. If you don't find anything, it's likely that there was nothing newsworthy about it. Everything vaguely newsworth is published on the Web, IME |
#88
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Bt pesticide resistance
On 28 Aug 2003 23:31:26 GMT, Brian Sandle
posted: In sci.agriculture Mooshie peas wrote: On 28 Aug 2003 13:51:31 GMT, Brian Sandle posted: In sci.med.nutrition Mooshie peas wrote: ======================================= Evidence in Rebuttal - Life Sciences Network 20 February 2001, 9:24 am Press Release: New Zealand Life Sciences Network Conclusion: In conclusion, it is our opinion that Dr Ingham has presented inaccurate, careless and exaggerated information to the Royal Commission; incorrectly interpreting published scientific information and generating speculative doomsday scenarios that are not scientifically supportable. As they want others to be exact so they must be taken at their word. But they leave plenty of room for misunderstanding: Read the rest of it. I did. In conclusion, it is our opinion that Dr Ingham has presented inaccurate, careless and exaggerated information That could either mean that all the info is classifed that way, or rather that there has been some innacuracy, some lack of care. and futhermore the interesting admission by Life Sciences Network - exaggeration by Ingham's submission. So they are admitting some truth to it just exaggerated. Grasping at straws? There is a tiny bit of truth in everything, that's life. to the Royal Commission; incorrectly interpreting published scientific information and generating speculative doomsday scenarios that are not scientifically supportable. And the tone of that is that it is unlikely to kill off all the plant life on the planet, therefore go ahead with it. Nope. If some of it's wrong, then it must all be looked at sceptically. And that's what happens. Which is how to look at GM. But more than scepticism, rather fear. But you have shown nothing wrong. All the lies that I've seen are on the other side -- the anti-GM lobby. That UK "soil association" would have to be the biggest liars and twisters since the silly "Biodynamic" mob hit the airwaves here a while ago. My wireless set almost had bodily harm done to it when the lies from that Holden spokeman for the Soil Association were being spouted in an interview I recently heard. |
#89
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Bt pesticide resistance
On 1 Sep 2003 23:50:28 GMT, Brian Sandle
wrote: In sci.agriculture Torsten Brinch wrote: On 1 Sep 2003 11:52:50 GMT, Brian Sandle wrote: No you need to be quite good at the subject to deal properly with outliers. I am thinking that sometimes people do not eliminate them when they should be, and others do but don't acknowledge it. Imagine you represent a conservative govt applying as little as possible health funding to a village of 100 people of mainly low income, based on whether they can pay for it themselves or not. When calculating the average will you include the income of the one multi-millionaire in the village? That would make the average income rather higher, so you can fund less. But the other 99 people would have no ability to pay, consequently. The place would become a real eyesore. But that's not an outlier problem, Brian. Indeed, there's not much of a statistical problem in it :-) Except in that part of statistics is deciding what measures to use and what to measure. I must admit I find it the bigger problem in imagining myself as a conservative govt representative. You have sampled the whole population, you know the income of each and every individual in it, you know their average income. The average is the average. It is just not a very good descriptor for what the politicians want to describe. Then you might change to the middle income. That might not work either if there is a big tail of very low incomes. Perhaps, could we use some statistics on misuse of the public health care system? You know, some people go to the doctor for no good reason again and again, etc, we could get some numbers on that. We could say: This wouldn't be a problem in a user-financed system. And, "the money lies best in the citizen's pocket". There must be a basic health system, but need it cost that much? We could talk: about healthy competition in the health care industry, people choosing freely between products on a free market for a wealth of health services. Everything would become cheaper then, our society would be richer, and we could all get better health care than we get it now for less money, or a faster car. Clearly -no one- benefits from an inefficient tax-funded health system -- [this is where we show a colorful graph of our statistic on-screen] -- a public health sector, which is so vulnerable to overuse and misappropriation of resources. Then if you were looking for how much the village could potentially donate to a cause would the high earner still be an outlier? Yes. In that situation average income might be a more suitable descriptor. But again, this is not an outlier problem. The high earner is known to be part of the population studied, so the data point representing his income can never be considered an outlier. So you might change from a purely latitude and longitude basis for the sample to some other. Perhaps it is the subset of employees in the region. Say you wanted to persuade people that potatoes in general are not high on solanine. How many sweet potatoes are you allowed in the sample? Given the figures the sweet potatoes might appear as outliers. This might lead back to calling into question whether a sweet potato is a potato. I think we -must- have decided on that question way before looking for outliers in our data. :-) I think Gordon has a little point, that he needed to be told a bit more about the outlier categorizing. But, what if all he wants to know is that Ms.Ingham is a witch and should be burned? But when you search the web for how frequently `Monsanto' occurs in studies mentioning outliers, how much do you get? Interesting problem. How do you best restrict a web search, to make it return only studies? Heh. Over at sci.ag. Gordon has posted this Monsanto funded study, which, :-) hold on to your chair, apparently has discarded outliers, without mentioning that it has done it , far less telling when or why. You should see Gordon, he is really -rough- now on that poor Monsanto report now because of that :-) Just kidding. Gordon has studiously not said a word about it. |
#90
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Bt pesticide resistance
In sci.agriculture Mooshie peas wrote:
On 28 Aug 2003 23:29:25 GMT, Brian Sandle posted: In sci.agriculture Mooshie peas wrote: On 28 Aug 2003 14:23:53 GMT, Brian Sandle posted: Do you have the database of withdrawn applications and why they were withdrawn? A while back I referred to a submission by Jack Heineman against approval of another organisation's application for GM work in NZ. The other organisation withdrew the application. Was Dr Ingham's work, connected with the EPA, the cause of a dangerous or dubious application being withdrawn? No idea. You'll have to eyeball your regulator's documentation, I would think. That's right, where do they keep the records of withdrawn applications and what has caused the withdrawal? I suspect a bash at Google would find some information about this if it was at all interesting. If you don't find anything, it's likely that there was nothing newsworthy about it. Everything vaguely newsworth is published on the Web, IME I have checked again and http://www.aphis.usda.gov/bbep/ is still not even giving out data for ordinary applications any more. Somehow I think the data about withdrawn applications in USA will be kept covered. Then we won't be able to verify the claim about the withdrawal of the GM Klebsiella application following Ingham's research findings. |
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