The probability we use to define a statistically significant outcome is called
A) an effect size.
B) the null hypothesis.
C) alpha.
D) a margin of error.

Question

Quizplus · Accepted Answer

The probability we use to define a statistically significant outcome is called alpha. It is typically set at 0.05, indicating a 5% chance that the observed result could occur by chance if the null hypothesis (no significant difference or relationship) is actually true. A, B, and D are all related to hypothesis testing or statistical analysis, but they do not specifically refer to the probability used to define statistical significance.

The Probability We Use to Define a Statistically Significant Outcome