Statistical bias can affect which of the following statistical phenomena?
A) Effect sizes
B) Confidence intervals
C) p-values
D) All of the above

Question

Quizplus · Accepted Answer

Statistical bias can affect all of the listed phenomena. Bias can distort effect sizes by causing overestimation or underestimation of the true effect. It can also shift confidence intervals and render them too narrow or too wide. Lastly, bias can impact p-values and lead to incorrect conclusions about statistical significance.

Statistical Bias Can Affect Which of the Following Statistical Phenomena