The age distribution of 100 life-insurance policy holders is as follows: Age (on nearest birthday), 17-19.5, 20-25.5, 26-35.5, 36-40.5, 41-50.5, 51-55.5, 56-60.5, 61-70.5 No. of persons, 5, 16, 12, 26, 14, 12, 6, 5

Find the variance and standard deviation for the following distribution: X:, 4.5, 14.5, 24.5, 34.5, 44.5, 54.5, 64.5 f: , 1, 5, 12, 22, 17, 9, 4

Find the variance and standard deviation for the following distribution: X:, 4.5, 14.5, 24.5, 34.5, 44.5, 54.5, 64.5 f: , 1, 5, 12, 22, 17, 9, 4

Find the variance and standard deviation for the following distribution: X:, 4.5, 14.5, 24.5, 34.5, 44.5, 54.5, 64.5 f: , 1, 5, 12, 22, 17, 9, 4

Draw a cumulative frequency curve and cumulative frequency polygon for the following frequency distribution by less than method. Age (in yrs). 0-9 10-19 20-29 30-39 40-49 50-59 60-69 No. of Person 5 15 20 23 17 11 9

The median of 5,19,14,6,8,9,12,13,21 is

Construct a frequency distribution table for the following data, taking class-intervals 4-6, 6-8 , ............. 14-16 . 11.5, 6.3, 7.8, 9.2, 10.5, 4.5, 6, 8.3, 12.5, 15.8, 7.4, 5.3, 8.4, 15.2, 8.9, 9.8, 8.25, 6.5, 5.8, 10.5, 14.2, 15.3, 11.7, 9.9, 8.8, 6.6, 4.3, 4.7, 9.4, 10.1, 15.5, 14.4, 12.2, 7.7, 5.5 .

Which of the following are like decimals: 0.34, 0.07, 5.35, 24.70 45.05, 4.505, 20.55, 20.5 8.80, 17.08, 8.94, 0.27 4.50, 16.80, 0.700, 7.08

Calculate the mean deviation about median age for the age distribution of 100 persons given below: Age 16-20 21-25 26-30 31-35 36-40 41-45 46-50 51-55 Number 5 6 12 14 26 12 16 9

Calculate the mean deviation about median age for the age distribution of 100 persons given below: Age 16-20 21-25 26-30 31-35 36-40 41-45 46-50 51-55 Number 5 6 12 14 26 12 16 9

Calculate the mean, median and standard deviation of the following distribution: Class interval 31-35 36-40 41-45 46-50 51-55 56-60 61-65 66-70 Frequency: 2 3 8 12 16 5 2 3