September 2015
Beginner to intermediate
608 pages
13h 43m
English
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Analysis of variance
Analysis of variance, often shortened to ANOVA, is a series of statistical methods used to measure the statistical significance of the difference between groups. It was developed by Ronald Fisher, an extremely gifted statistician, who also popularized significance testing through his work on biological testing.
Our tests, using the z-statistic and t-statistic, have focused on sample means as the primary mechanism to draw a distinction between the two samples. In each case, we looked for a difference in the means divided by the level of difference we could reasonably expect and quantified by the standard error.
The mean isn't the only statistic that might indicate a difference between samples. In fact, it is also possible to ...
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