GRE (Graduate Record Examinations) Psychology Measurement and Methodology-Statistical Procedures Study Material (Page 3 of 25)

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Friedman Test: Assumptions and Steps in Friedman Test

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Friedman test is a statistical test developed by Milton Friedman. It is a non-parametric test which is similar to parametric repeated measures ANOVA. This test is used to find the difference between the groups, if the dependent variable being measured is ordinal. It is an alternative to repeated measures ANOVA.

Friedman test is si…

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Power Analysis: Uses of Power Analysis

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Power analysis is a statistical method used to test the hypothesis. It provides the information regarding the probability that the test rejects the null hypothesis if the given alternative hypothesis is true. The value of power analysis ranges from zero to one, whereas the value of power analysis increases the probability of wrongly failing to reject the null hypothesis decreases.

To test probability of type II error , formula given is It gives c…

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