2/13/2023 0 Comments Standard normal table z calculator![]() ![]() Assume that we have a population data range named data_rng. ![]() There are two ways for Excel to calculate Z Score. ![]() Without the population standard deviation, we use T Test (also known as Student’s t Test) to interference the population mean from sample mean. In reality, we do not have data of the whole population. To inference using sample mean, when the population standard deviation and population mean are known, we can use Z test to interference the population mean from sample mean. In statistical inference, we are interested to know whether a small sample comes from a population. This tutorial explains how to calculate Z Score and probability using SPSS and Excel.Ĭalculate probability of a range using Z Score Calculate Z Score and probability using SPSS and Excel ![]()
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