The following data represent the salaries (in thousands of dollars) of a sample of 13 employees of a firm: 26, 23, 29, 24, 21, 24, 20, 22, 27, 23, 24, 24, and 28. d. Compute the mean, median and mode. Interpret each of them. e. Calculate the variance and standard deviation of the data. f. Compute the first and third quartile of the data. Problem 8 (6 points). g. h. i. j. k. l. (1 point) What is the level of measurement used to measure the rank of a member of your sport's club at a regional racing competition? (1 point) What differences exists between nominal and interval levels of measurement? (1 point) What happens to the mean of a distribution if all data points are increased by 3? (1 point) What happens to the standard deviation of a distribution if all data points are decreased by 3? (1 point) What happens to the mean of a distribution if all data points are divided by 3? (1 point) What happens to the variance of a distribution if all data points are divided by 3