Reading scores versus IQ scores

Data for Exercises 2.10 and 2.53

Readiq

Format

A data frame/tibble with 14 observations on two variables

reading

reading achievement score

iq

IQ score

References

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

Examples

plot(reading ~ iq, data = Readiq)
model <- lm(reading ~ iq, data = Readiq)
abline(model, col = "purple")

predict(model, newdata = data.frame(iq = c(100, 120)))
#>        1        2 
#> 36.62927 52.97844 
residuals(model)[c(6, 7)]
#>        6        7 
#> 9.370734 6.021563 
rm(model)