The effect of sample size on the statistical test power


Abstract in English

The research aims to estimate the effect of sample size on the statistical test power (t) for one sample, two interrelated samples, two independent samples, and on the statistical test power of one-way analysis of variance test (F) to compare the averages. The descriptive method was used, and different sizes of samples (300) items, where it was generated using the program (PASS 14), and taken into account to be realized in this data the set of assumptions needed to make test (t) and (F), with respect to random testing, categorical level of measurement, normal distribution, and equinoctial variance.

References used

Cohen, J. (1977). Statistical power analysis for the behavioral sciences. New York: Academic Press
Cohen, J. (1988). Statistical power analysis for the behavioral sciences. Hillsdale, NJ: Erlbaum
Hamadneh, Iyad Mohammed (2015). Statistical Power and Effect Size in Educational and Psychological Research Published in Journal of AL-MANARAH for Research and Studies, Research on Humanities and Social Sciences. Vol.5, No.20

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