Description Usage Format Source Examples
In this experiment, hyperactive and control students were given a mathematics test in either a quiet or loud testing environment.
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A data frame with 40 observations on the following 3 variables.
score
score on a mathematics test
noise
a factor with levels hi
lo
group
a factor with levels control
hyper
Sydney S. Zentall and Jandira H. Shaw, Effects of classroom noise on perfor- mance and activity of second-grade hyperactive and control children, Journal of Educational Psychology 72 (1980), no. 6, 830.
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