Helen is a researcher interested in gender differences in students' math achievement. she plans to use the meta-analysis technique because a. it is more accur

In the scenario in which Helen, who is a researcher interested in gender differences in students' math achievement plans to use the meta-analysis technique because means that she wants to view the effect size. The meta-analysis is a statistical technique that combine the results of a number of different reports into one report to create a single, more precise estimate.

Where is the map? explain the choices?