Adsales {BSDA}

Number of ads versus number of sales for a retailer of satellite dishes

Description

Data used in Exercise 9.15

Usage

Adsales

Format

A data frame/tibble with six observations on three variables

month

a character vector listing month

ads

a numeric vector containing number of ads

sales

a numeric vector containing number of sales

References

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

Examples

plot(sales ~ ads, data = Adsales, main = "Exercise 9.15")
mod <- lm(sales ~ ads, data = Adsales)
abline(mod, col = "red")
summary(mod)
predict(mod, newdata = data.frame(ads = 6), interval = "conf", level = 0.99)