R: Clothing and Intelligence Rating of Children

Gilby {vcdExtra} | R Documentation

## Clothing and Intelligence Rating of Children

### Description

Schoolboys were classified according to their clothing and to their teachers rating of "dullness" (lack of intelligence), in a 5 x 7 table originally from Gilby (1911). Anscombe (1981) presents a slightly collapsed 4 x 6 table, used here, where the last two categories of clothing were pooled as were the first two categories of dullness due to small counts.

Both `Dullnes` and `Clothing` are ordered categories, so models and methods that examine their association in terms of ordinal categories are profitable.

### Usage

    data(Gilby)

### Format

A 2-dimensional array resulting from cross-tabulating 2 variables for 1725 observations. The variable names and their levels are:

No | Name | Levels
1 | `Dullness` | `"Ment. defective", "Slow", "Slow Intell", "Fairly Intell", "Capable", "V.Able"`
2 | `Clothing` | `"V.Well clad", "Well clad", "Passable", "Insufficient"`

### Source

Anscombe, F. J. (1981). Computing in Statistical Science Through APL. New York: Springer-Verlag, p. 302

### References

Gilby, W. H. (1911). On the significance of the teacher's appreciation of general intelligence. Biometrika, 8, 93-108 (esp. p. 94). [Quoted by Kendall (1943,..., 1953) Table 13.1, p 320.]

### Examples

    data(Gilby)

    mosaic(Gilby, shade=TRUE)

    # correspondence analysis to see relations among categories
    if(require(ca)){
    	ca(Gilby)
    	plot(ca(Gilby))
    	title(xlab="Dimension 1", ylab="Dimension 2")
    }

[Package vcdExtra version 0.7-1 Index]