Social Studies, 06.11.2019 23:31 TravisI00
Aresearcher would like to compare the effectiveness of two different methods for teaching third-grade mathematics. one group of students is assigned to dr. smith's class using method i and another group is assigned to dr. jones' class using method ii. at the end of the school year, each child is given a standardized mathematics achievement test and the two groups of scores are compared to see which method produced a better outcome. what is the confounding variable in this study?
Answers: 2
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