Question

What does a meta-analysis do? A) summarizes the average effect size across studies B) examines the size of an effect in a large sample C) uses a long-term longitudinal study to determine the strength of effects D) does all of these

Answer 1

A) summarizes the average effect size across studies

A meta-analysis is a statistical technique used in research to summarize and analyze the findings from multiple studies on a particular topic or research question. It combines the results of these individual studies to provide a more comprehensive and statistically powerful estimate of the overall effect size (or the strength of the relationship) between variables of interest.

So, option A is the correct answer. A meta-analysis primarily focuses on summarizing the average effect size across studies to provide a more robust and generalizable estimate of the relationship or effect being studied.

Step-by-step explanation: