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faraway (version 1.0.7)

spector: Teaching methods in Economics

Description

A study to determine the effectiveness of a new teaching method in Economics

Usage

data(spector)

Arguments

Format

A data frame with 32 observations on the following 4 variables.

grade

1 = exam grades improved, 0 = not improved

psi

1 = student exposed to PSI (a new teach method), 0 = not exposed

tuce

a measure of ability when entering the class

gpa

grade point average