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2. Consider the following sample data: 4, 14, 6, 9, 21, 3, 7 and 10. Calculate the mode? [CO1-PO1:C4] (1 Mark) 3. The accounting firm of Rowatti and Koppel specializes in income tax returns for self- employed professionals, such as physicians, dentists, architects and lawyers. The firm employs 11 accountants who prepare the returns. For last year, the number of returns prepared by each accountant was: 58 75 31 58 46 65 60 71 45 58 80 Find the mean, median and mode for the number of returns prepared by each accountant. [CO1-PO1:C2] (3 Mark) 4. The Philadelphia office of Price Waterhouse Coopers LLP hired five accounting trainees this year. Their monthly starting salaries were $3536, $3173, $3448, $3121 and $3622. a) Compute the mean b) Compute the variance c) Compute the standard deviation [CO1-PO1:C3] (3 Mark) 5. The following table gives the frequency distribution of the number of hours spent per week playing video games by all 50 students of the eight grade at a school. Hours per Number of Week Students 0-5 5 6-11 12-17 14 18-23 13 24-29 30-35 2 Find the mean, variance and standard deviation. [CO1-PO1:C2] (5 Mark) 6. A company counted the number of all of their employees in each of the following age classes. According to the distribution, a) Construct a histogram [CO1-PO1:C3] (2 Mark) b) Calculate mean, median, mode [CO1-PO1:C4] (5 Mark) Age Range Number of Employees 20-24 8 25-29 37 30-34 25 35-39 48 40-44 27 45-49 10