Format
A data frame with 2 observations on the following 4 variables.
SOCIAL_CLASS- a factor with levels
Middle Working A_few- a numeric vector
Some- a numeric vector
Lots- a numeric vector
Source
Stuart, M., Dixon, M., Masterson, J., and Quinlan, P. (1998) Learning to Read
at Home and at School. British Journal of Educational Psychology,
68, pp. 3-14.