What is a T-test in statistics?

  1. One-sample t-test
    We perform a One-Sample t-test when we want to compare a sample mean with the population mean. The difference from the Z Test is that we do not have the information on Population Variance here. We use the sample standard deviation instead of the population standard deviation in this case. The formula used to perform this test is as follows
image credit: https://www.sjsu.edu/faculty/gerstman/StatPrimer/t-table.pdf

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