R: The Electric Company

electric {WRS2} | R Documentation

## The Electric Company

### Description

These data are based on an educational TV show for children called "The Electric Company". In each of four grades, the classes were randomized into treated (TV show) and control groups (no TV show). At the beginning and at the end of the school year, students in all the classes were given a reading test. The average test scores per class were recorded.

### Usage

    electric

### Format

A data frame with 5 variables and 192 observations:

`City`

  Fresno and Youngstown

`Grade`

  grade

`Pretest`

  reading scores at the beginning of the semester

`Posttest`

  reading scores at the end of the semester

`Group`

  treatment vs. control

### References

Gelman, A., & Hill, J. (2007). Data Analysis Using Regression and Multilevel/Hierarchical Models. Cambridge University Press: New York, NY.

### Examples

    summary(electric)

[Package WRS2 version 0.9-2 Index]