Hello Sir/Mam these questions have to be done on a paper with pen.

Thankyou

1. Determine median, lower quartile and upper quartile for the following distribution: Life time 0-20 20-40 40-60 60-80 80-100 100-120 120-140 No. of items 5 15 20 24 16 12 8 The -. 2 The scores obtained by two batsmen A and B in 7 matches are given below: A 30 44 66 62 60 34 80 B 34 46 70 1 38 55 48 60 Determine who is more efficient and who is more consistent. 3 Calculate the mean, variance and standard deviation for the following frequency distribution, and hence obtain the value of co-efficient of variation. X: 20-25 25-30 30-35 35-40 40-45 45-50 50-55 55-60 60-65 f : 35 165 215 185 145 105 75 65 45 Given below is the distribution of 140 candidates obtaining marks X and cumulative frequency (c.f.) of X. X: 10 20 30 40 50 60 70 80 90 100 c.f. : 140 133 118 100 75 45 25 9 2 0 Calculate the mean, median and mode for the distribution