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Talk:Flaws in Richard Lenski Study (view source)
Revision as of 03:15, July 15, 2008
, 03:15, July 15, 2008→Expertise in Statistics: reply
== Expertise in Statistics ==
== Expertise in Statistics ==
I don’t mind admitting that I have none! The article states that Lenski combined the three trials incorrectly and that he doesn’t make the insignificance of the third clear. Now it may well be very clear to others but, unfortunately, the article doesn’t make clear to people like me what was wrong. Can someone expand on this point? Is anyone able to explain to a layman what Lenski should have done and the conclusions he should have reached? It's all getting a little technical for me. --[[User:Billd|Bill Dean]] 12:10, 14 July 2008 (EDT)
I don’t mind admitting that I have none! The article states that Lenski combined the three trials incorrectly and that he doesn’t make the insignificance of the third clear. Now it may well be very clear to others but, unfortunately, the article doesn’t make clear to people like me what was wrong. Can someone expand on this point? Is anyone able to explain to a layman what Lenski should have done and the conclusions he should have reached? It's all getting a little technical for me. --[[User:Billd|Bill Dean]] 12:10, 14 July 2008 (EDT)
: OK, here's point 4 in layman's terms: Lenski's hypotheses of a mutation rate imply that a ten-fold increase in sample size should result in a ten-fold increase in mutations. But it doesn't. In fact, a nearly ten-fold increase in sample size results in only a slight increase in mutations in Lenski's data. These data, as presented by Lenski in his paper, suggest (if properly interpreted) that there is no mutation rate at all. Rather, these data are more consistent with occasional contamination, broadly defined.--[[User:Aschlafly|Aschlafly]] 23:15, 14 July 2008 (EDT)