xmp13.06 {Devore5}R Documentation

data from Example 13.6

Description

The xmp13.06 data frame has 16 rows and 2 columns on the yield of paddy (a grain farmed in India) versus the time of harvest.

Format

This data frame contains the following columns:

days
date of harvesting (number of days after flowering.
yield
yield (kg/ha) of paddy

Source

Devore, J. L. (2000) Probability and Statistics for Engineering and the Sciences (5th ed), Duxbury

(1975), ``Determination of biological maturity and effect of harvesting and drying conditions on milling quality of paddy'', J. Agricultural Eng. Research, 353-361

Examples

data(xmp13.06)
plot(yield ~ days, data = xmp13.06,
   main = "Compare to Figure 13.10, page 564")
fm1 <- lm(yield ~ days + I(days^2), data = xmp13.06)
summary(fm1)
anova(fm1)
predict(fm1, list(days = 25), interval = "conf")
predict(fm1, list(days = 25), interval = "pred")