100 SECTION B (50 MARKS) ANSWER ONLY TWO QUESTIONS ALL QUESTIONS CARRY EQUAL MARKS Bl. The following table presents the distribution of wages for senior level personnel in two types of financial institutions: Monthly Salary Number of Personnel (in Ghana Cedis) Institution A Institution B 8,000 -9,999 5 0 10,000 - 11,999 17 19 12,000 - 13,999 21 25 14,000 - 15,999 3 4 16,000 - 17,999 0 18,000- 19,999 0 (a) Find the arithmetic mean and standard deviation for each group of personnel. [10 marks] (b) What is a coefficient of variation? What is its use? [6 marks] (e) Using your results in (a) above, find the coefficient of variation for each group of personnel. Comment on your results. [9 marks]