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A major criticism of null hypothesis testing is that it is fundamentally uninformative. Because the null hypothesis posits that there is precisely zero relationship between variables in the population, critics argue that it is never literally true in the real world. Consequently, rejecting the null hypothesis merely confirms that some nonzero relationship exists, which provides researchers with very little precise information about the actual strength or nature of the phenomenon being studied.

Informativeness of Null Hypothesis Testing

Critics argue that null hypothesis testing is fundamentally uninformative because rejecting the null hypothesis merely confirms that some nonzero relationship exists, without providing precise information about its actual strength.

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