Question 1 [80] Selling prices (N$ 1 000s) for a sample of 25 two-bedroom house in a certain town are given in the table below: Selling price (NS) Selling price (N$) 572 16 689 945 17 188 831 18 566 631 19 987 5 153 20 830 6 371 21 517 980 22 760 CO 482 23 898 570 24 516 10 950 25 969 11 916 12 488 13 405 14 901 15 554 Required: 1.1 Calculate and interpret the following descriptive statistics measures: (20) a) Mean b) Mode c) Median d) Third quartile e) 60" percentile f) Standard deviation