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GRE
GRE Quantitative Reasoning Section

Comparison of Variances in Test Scores

Hard Data Analysis Descriptive Statistics

A researcher studied the test scores of students in two different sections of a statistics course. The following data summarizes the scores:

Section A Scores: 85, 78, 92, 81, 87, 90

Section B Scores: 80, 82, 88, 79, 85, 95

Calculate the mean and standard deviation for each section's scores. Determine how the variance of Section A compares to the variance of Section B.

Hint

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% Correct91%