xmp12.04 {Devore6} | R Documentation

## data from Example 12.4

### Description

The `xmp12.04` data frame has 15 rows and 2 columns.

### Format

This data frame contains the following columns:

weight
  unit weight of the concrete specimen (pcf).
porosity
  porosity (%) of the concrete specimen.

### Source

Devore, J. L. (2003) Probability and Statistics for Engineering and the Sciences (6th ed), Duxbury

(1995) ``Pavement thickness design for no-fines concrete parking lots'' J. of Transportation Engineering, 476-484.

### Examples

    data(xmp12.04)
    plot(porosity ~ weight, data = xmp12.04,
         xlab = "Unit weight (pcf) of concrete specimen",
         ylab = "Porosity (%)",
         main = "Data from Example 12.4, page 500")
    fm1 <- lm(porosity ~ weight, data = xmp12.04)
    abline(fm1)
    summary(fm1)
    opar <- par(mfrow = c(2,2))
    plot(fm1)
    par(opar)

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