For Exercises 53–60, do the following for the indicated random variable:

  1. Compute the variance of , .
  2. Calculate the standard deviation of , .
  3. Use the -score method to determine whether any outliers or unusual data values exist.

Question 6.59

59. X = the number of years of high school math from Exercise 23

6.1.59

(a) 0.35154784 year squared (b) 0.5929 year (c) 1 year of high school math is considered an outlier; 2 years of high school math is considered moderately unusual