Using the CEO Salary Data given in Table 1 on the next page, calculate samplevariance, sample standard deviation, and the standard error of the mean for all variables. [Youhave to show your work]. How do you interpret those numbers? For reference, you can use thesample mean value you have calculated in question number 4 above.

Table 1: CEO Salary Data salary sales roe ros 1095 27595 14.1 191 1001 9958 10.9 13 1122 6125.9 23.5 14 578 16246 5.9 -21 1368 21783.2 13.8 56 1145 60214 20 55 1078 2266.7 16.4 62 1094 2966.8 16.3 144 1237 4570.2 10.5 37 833 2830 26.3 37 567 596.8 25.9 109 933 19773 26.8 -10 1339 40047 14.8 41 937 2513.8 22.3 14 2011 1580.6 56.3 63 1585 6754 1261339 40047 14.8 937 2513.8 22.3 44 2011 1580.6 56.3 63 1585 6754 12.6 17 905 1066.3 20.4 141 1058 3199.9 1.9 -15 922 1452.7 19.9 56 1220 8995 15.4 28 salary = is the CEO's salary in 1990 in thousands of $. sales = is the 1990 firm sales in millions of $. roe = Return on equity, 88-90's average. ros = Return on firm's stock, 88-90