# VADeaths: Death Rates in Virginia (1940)

Description Usage Format Details Source References Examples

### Description

Death rates per 1000 in Virginia in 1940.

### Usage

 `1` ```VADeaths ```

### Format

A matrix with 5 rows and 4 columns.

### Details

The death rates are measured per 1000 population per year. They are cross-classified by age group (rows) and population group (columns). The age groups are: 50–54, 55–59, 60–64, 65–69, 70–74 and the population groups are Rural/Male, Rural/Female, Urban/Male and Urban/Female.

This provides a rather nice 3-way analysis of variance example.

### Source

Molyneaux, L., Gilliam, S. K., and Florant, L. C.(1947) Differences in Virginia death rates by color, sex, age, and rural or urban residence. American Sociological Review, 12, 525–535.

### References

McNeil, D. R. (1977) Interactive Data Analysis. Wiley.

### Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14``` ```require(stats); require(graphics) n <- length(dr <- c(VADeaths)) nam <- names(VADeaths) d.VAD <- data.frame( Drate = dr, age = rep(ordered(rownames(VADeaths)), length.out = n), gender = gl(2, 5, n, labels = c("M", "F")), site = gl(2, 10, labels = c("rural", "urban"))) coplot(Drate ~ as.numeric(age) | gender * site, data = d.VAD, panel = panel.smooth, xlab = "VADeaths data - Given: gender") summary(aov.VAD <- aov(Drate ~ .^2, data = d.VAD)) opar <- par(mfrow = c(2, 2), oma = c(0, 0, 1.1, 0)) plot(aov.VAD) par(opar) ```

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