If the Difference Between Groups in an Experiment Is Unlikely

question 174

Short Answer

If the difference between groups in an experiment is unlikely to have occurred by random chance alone, the difference is said to be ____________________.

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Definitions:

Rejecting Null Hypothesis

The decision in hypothesis testing that the evidence is strong enough to conclude a significant effect exists.

Retaining Null Hypothesis

The decision in hypothesis testing that there is not enough evidence to reject the null hypothesis, implying the observed data does not significantly differ from what was expected.

Alpha (α)

Alpha (α) represents the level of significance in hypothesis testing, defining the threshold for rejecting the null hypothesis.

Critical Value

A critical value is a point on the distribution that represents a threshold above which significant results are considered to occur.