# Statistics-Sample Papers

STATISTICS
TEST
Maximum marks: 25
Maximum time: 40 minutes
1.   Find the median of the following distribution: 2
 Class Interval Frequency 0-10 4 10-20 4 20-30 7 30-40 10 40-50 12 50-60 8 60-70 5 Total 50
2.   Find the mean of the following data: 2
 Class 0-50 50-100 100-150 150-200 200-250 Frequency 15 20 35 20 10
3.   The mean of a distribution is 50. Determine value of ‘g’ 3
 Class 0-20 20-40 40-60 60-80 80-100 Frequency 17 g 32 24 19
4.   Find the median of the following data: 2
 Class interval Frequency 0-10 5 10-20 8 20-30 23 30-40 17 40-50 7 50-60 8
5.   Find value of ‘q’ when mean is 47. 3
 Class 0-20 20-40 40-60 60-80 80-100 Frequency 8 15 20 q 5
6.   The following table shows the ages of staff members in a office. 4
 Age 18-27 27-36 36-45 45-54 54-63 Number ofmembers 6 11 21 23 14
Find mean and the mode
7.   Find the mean, mode and median of the following data: 6
 Class Frequency 0-20 12 20-40 13 40-60 6 60-80 7 80-100 8 100-120 14 120-140 13
8.   The median of the following data is 52.5. Find value of x and y if the final frequency is 100. 3
 Class Frequency 0-10 5 10-20 2 20-30 X 30-40 12 40-50 20 50-60 17 60-70 Y 70-80 7 80-90 9 90-100 4