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# The written test marks are out of 75 and the oral

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Unformatted text preview: 5 4 140 6 145 6 146 3 148 5 149 2 150 1 157 1 38. An investor buys Rs.1, 200 worth of shares in a company each month. During the first 5 months he bought the shares at a price of Rs.10, Rs.12, Rs.15, Rs.20 and Rs.24 per share. After 5 months what is the average price paid for the shares by him. 39. Determine median from the following data 25, 20, 15, 45, 18, 7, 10, 38, 12 40. Find median of the following data Wages (in 60-70 50-60 40-50 30-40 20-30 Rs) Number of 7 21 11 6 5 workers 41. The table below gives the relative frequency distribution of annual pay roll for 100 small retail establishments in a city. 138 Annual pay roll (1000 rupees) Less than 10 10 and Less than 20 20 and Less than 30 30 and Less than 40 40 and Less than 50 50 and Less than 60 Establishments 8 12 18 30 20 12 100 Calculate Median pay. Calculate the median from the data given below Wages Number of Wages Number of (in Rs ) workers (in Rs) workers 105 Above 70 520 Above 30 45 Above 80 470 Above 40 7 Above 90 399 Above 50 210 Above 60 43. From the following data, compute the values of upper and lower quartiles, median, D6, P20. Marks No. of. Marks No. of. Students Students 90 40-50 5 Below 10 40 50-60 25 10-20 20 60-70 40 20-30 10 Above 70 70 30-40 44. Draw an ogive curve from the following data to find out the values of median and upper and lower quartiles. Classes 90100- 110- 120- 130- 140- 150100 110 120 130 140 150 160 Frequency 16 22 45 60 50 24 10 45. Calculate mode from the following data Income 10-20 20-30 30-40 40-50 50-60 60-70 70-80 (Rs) No. of. 24 42 56 66 108 130 154 Persons 42. 139 46. Represent the following data by means of histogram and from it, obtain value of mode. Weekly 10-15 15-20 20-25 25-30 30-35 35-40 40-45 wages (Rs) No. of. 7 9 27 15 12 12 8 Workers Suggested Activities: 1. Measure the heights and weights of your class students. Find the mean, median, mode and compare 2. Find the mean marks of your class students in various subjects. Answers: I 1. (b) 5. (a) 9. (c) 13. (b) 2. (c) 6. (d) 10. (d) 14....
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