grades {SIN}R Documentation

School Grades

Description

The data consists of the test results of 220 boys in the 6 school subjects:

Usage

data(grades)

Format

A list providing a summary of the data. The list contains:

grades$means : the mean vector,
grades$stddev : the vector of standard deviations,
grades$corr : the correlation matrix, and
grades$n : the sample size.

Source

Whittaker, J. (1990) Graphical models in applied multivariate statistics. Chichester: Wiley. (See p.266).

Examples

data(grades)
grades$means
grades$stddev
grades$corr
grades$n

[Package SIN version 0.4 Index]