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Unformatted text preview: arises from unavoidable small variations in experimental conditions. For instance, both the growth of the viruses and the measurement technique are highly sensitive to environmental conditions such as the temperature and the CO 2 concentration in the incubator. Slight ﬂucuations in the environ-mental conditions cannot be prevented, and these ﬂucuations cause the variation that is reﬂected in the data. In this kind of situation, the advantage of running the two strains concurrently is particularly striking. From : Statistics for the Life Sciences, by Myra Samuels....
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- Spring '11