Standard Error of the Mean vs. Standard Deviation
They have the same average but mean something very different when you are planning your rent or mortgage payments. Situations ...
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Pooled Standard Deviation: How Do You Calculate It?
The larger the sample size, the greater the proportional effect will be on the overall estimate of the standard deviation. Here is the generalized formula for it: The formula for pooled standard ...
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Example 43.3: Working with Unequal Subgroup Sample Sizes
The subgroup sample sizes vary between 3 and 7. data wire; input day size @; informat day date7.; format day date7.; do i=1 to size; input brstr @@; output; end; drop i size; label brstr ='Breaking ...