Question

Dr. o'connor was interested in whether men and women differ in sexual attitudes. she found that more than 170 studies had already been published on this issue. using _____, she combined the results of these studies and analyzed the data for overall trends.

Answer 1

the answer is a meta-analysis
meta-analysis refers to a statistical technique which combined the result of several studies in order to identify a certain trend.
The purpose of meta-analysis is usually to solve controversial topics that often resulted in wide variation of study conclusions.

Answer 2

The answer here is meta-analysis.
We can see here that Dr O'Connor is using meta-analysis because she is examining the 170 studies that have been done on the topic to find out the truth that lies behind theses similar studies. Meta-analysis in essence is a statistical analysis done on the results of the previous studies on a certain topic or in a certain field as it combines all of those findings to get an overall result.