Aptitude test scores versus productivity in a factory
Data for Exercises 2.1, 2.26, 2.35 and 2.51
Aptitude
A data frame/tibble with 8 observations on two variables
aptitude test scores
productivity scores
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
plot(product ~ aptitude, data = Aptitude, main = "Exercise 2.1") model1 <- lm(product ~ aptitude, data = Aptitude) model1 abline(model1, col = "red", lwd=3) resid(model1) fitted(model1) cor(Aptitude$product, Aptitude$aptitude)
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