Monday, November 14, 2016

How To... Select the Correct t-test to Compare Two Sample Means #48

One of the confusing things that takes a lot of time to explain in my Statistics classes occurs when we are discussing Student's t-test. This is a test to compare two sample means for a significant difference, and it was invented by Irishman William Sealy Gosset in 1908. There are three possible formulas for calculating the t statistic which is then  used to determine if a difference between the two samples has been found. My new video maps out the path to determine which test to use - it is important to choose the correct path, otherwise conclusions based on the data analysis could be false.

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