الدلالة الإحصائية و قوة الاختبار الإحصائي

Abstract EN

The current study aims to address both the concept of statistical significance and the concept of statistical test strength, which are considered among the basic concepts used by researchers in the field of psychology in verifying the accuracy of the results obtained when verifying the validity of the hypotheses.

The statistical significance is used to avoid the first type of error, which refers to the rejection of the null hypothesis and it is correct.

It helps to distinguish between the true difference and the difference due to chance or the sampling error by determining what is known as the level of significance.

As for the concept of the strength of the statistical test, it is used from In order to avoid making the second type error, accepting the zero hypothesis, it is false.