Standardized math test scores for 30 students
Data for Exercise 1.69
Math
A data frame/tibble with 30 observations on one variable
scores on a standardized test for 30 tenth graders
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
stem(Math$score) hist(Math$score, main = "Math Scores", xlab = "score", freq = FALSE) lines(density(Math$score), col = "red") CharlieZ <- (62 - mean(Math$score))/sd(Math$score) CharlieZ scale(Math$score)[which(Math$score == 62)]
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