control: Exam Scores for Algebra Control Group

Description Usage Format Details Examples

Description

The final-exam scores (out of 40 possible) for a control group of 41 algebra students.

Usage

1
data("control")

Format

The format is: num [1:41] 36 35 35 33 32 32 31 29 29 28 ...

Details

One year at Arizona State University, the algebra course director decided to experiment with a new teaching method that might reduce variability in final-exam scores by eliminating lower scores. The director randomly divided the algebra students who were registered for class at 9:40 A.M. into two groups. One of the groups, called the control group, was taught the usual algebra course; the other group, called the experimental group, was taught by the new teaching method. Both classes covered the same material, took the same unit quizzes, and took the same final exam at the same time. The final-exam scores (out of 40 possible) for the students in the control group are provided in the control dataset.

Examples

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