Which of the following statements best describes the value of an 'effect size' to research?
A) It has a key role to play when calculating assumptions about collected data.
B) It is a vital statistic when calculating the significance of an experimental study.
C) It is a measure of the power of an experiment and therefore its significance.
D) It is a standardized measure that allows for the comparison across different studies that have used different variables or measurement scales.

Question

Quizplus · Accepted Answer

Effect size is a standardized measure that helps compare studies that use different variables or measurement scales. It helps determine the magnitude of the difference or relationship between variables in a study, making it easier to interpret the results and compare them across studies. While effect size can be useful when making assumptions about the collected data, calculating significance, and measuring the power of an experiment, its primary value is in allowing comparison across studies.

Which of the Following Statements Best Describes the Value of an 'Effect