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| Use either of the following functions to calculate a [[Statistics/TestStatistic|critical]] [[Statistics/NormalDistribution|Z statistic]] for e.g. a significance level of 5%. | Use either of the following functions to calculate a [[Statistics/TestStatistic|critical]] [[Analysis/NormalDistribution|Z statistic]] for e.g. a significance level of 5%. |
Excel Statistic Function
Excel offers these statistic functions.
Normal Distribution
Use either of the following functions to calculate a critical Z statistic for e.g. a significance level of 5%.
=NORM.INV(1 - 0.05/2) =NORM.S.INV(1 - 0.05/2, 0, 1)