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Questions concerning demands in visual inspection box
== Statistical Significance ==
== Statistical Significance ==
The 2 instances in the little table that imply that statistical significance or lack thereof should be reported look a bit silly. The first phrase refers to the statement by Blount et al. that "A number of Cit+ clones were isolated..." on p7900. Asking how many is all well and good. But it appears the researchers decided how many to isolate, and it is nonsensical to ask about significance. The second phrase refers to the end of the sentence: "all were Ara-, T5-sensitive, and T6-resistant, as expected." It is potentially a bit more relevant here, but still doesn't make a lot of sense to simply ask generally about statistical significance - compared to what? Calculating significance is a way of testing the probability of sampling error, if that helps. [[User:Murray|Murray]] 11:01, 3 July 2008 (EDT)
The 2 instances in the little table that imply that statistical significance or lack thereof should be reported look a bit silly. The first phrase refers to the statement by Blount et al. that "A number of Cit+ clones were isolated..." on p7900. Asking how many is all well and good. But it appears the researchers decided how many to isolate, and it is nonsensical to ask about significance. The second phrase refers to the end of the sentence: "all were Ara-, T5-sensitive, and T6-resistant, as expected." It is potentially a bit more relevant here, but still doesn't make a lot of sense to simply ask generally about statistical significance - compared to what? Calculating significance is a way of testing the probability of sampling error, if that helps. [[User:Murray|Murray]] 11:01, 3 July 2008 (EDT)
== Visual Inspection ==
The methodology here is what's important, and they clearly write that the "LTEE populations are transferred daily into fresh medium, and the turbidity of each is checked visually at that time." The observations for which you are requesting data seem to be the kind of observations that aren't recorded, because they do not need to be. I'll give you an example from my experiences in the lab: when I perform an electrophoresis gel run, I have to make an agarose gel. Every time I do so I follow the recipe taped to our microwave: 40mL TAE buffer, 400mg Agarose. It's a given in our lab that all our gels are 1%, unless otherwise stated. Likewise, it seems likely that somebody working in Lenski's lab will, when checking for turbidity, do so by holding up a tube of culture, observe, "Yep, that's turbid," and continue on with the procedure as outlined in their protocol. If Lenski's lab is more diligent than the one in which I work, then we are still dealing with the kind of data that never leave a graduate student's notebook. Again, what data do you want, a table containing the exact same information every day ''(June 6, 1999 - Checked turbidity of cultures. They were turbid. June 7, 1999 - Checked turbidity of cultures. They were turbid. June 8, 1999 - Che...)''? Or would only scans of graduate students' notebook pages suffice? --[[User:Codyc|Codyc]] 20:54, 5 July 2008 (EDT)