Effect of mother's smoking on birth weight of newborn

Data for Exercise 2.27

Cigarett

Format

A data frame/tibble with 16 observations on two variables

cigarettes

mothers' estimated average number of cigarettes smoked per day

weight

children's birth weights (in pounds)

References

Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

Examples

plot(weight ~ cigarettes, data = Cigarett)
model <- lm(weight ~ cigarettes, data = Cigarett)
abline(model, col = "red")

with(data = Cigarett,
     cor(weight, cigarettes)
)
#> [1] -0.884236
rm(model)