In: Statistics and Probability
Weinstein, McDermott, and Roediger (2010) report that students
who were given questions to be answered while...
Weinstein, McDermott, and Roediger (2010) report that students
who were given questions to be answered while studying new material
had better scores when tested on the material compared to students
who were simply given an opportunity to reread the material. In a
similar study, a group of students from a large psychology class
received questions to be answered while studying for the final
exam. The overall average for the exam was μ = 73.4, but the n = 16
students who answered questions had a mean of M = 78.3 with a
standard deviation of s = 8.4. Use a two-tailed test with alpha =
.05 to determine whether answering questions while studying
produced significantly higher exam scores. Compute two different
measurements of effect size.