The following table gives the distribution of income of 100 families in a village. Calculate the standard deviation: Income Rs. 0-1000 1000-2000 2000-3000 3000-4000 4000-5000 5000-6000 No. of Families 18 26 30 12 10 4

The following table gives the distribution of income of 100 families in a village.Calculate the standard deviation: Income Rs.0-10001000-20002000-30003000-40004000-50005000-6000 No.of Families 182630 12104

The following table gives the distribution of the life time of 400 neon lamps: Lite time: (in hours) Number of lamps 1500-2000 14 2000-2500 56 2500-3000 60 3000-3500 86 3500-4000 74 4000-4500 62 4500-5000 48 Find the median life.

The following table gives the distribution of the life time of 400 neon lamps: Lite time: (in hours) Number of lamps 1500-2000 14 2000-2500 56 2500-3000 60 3000-3500 86 3500-4000 74 4000-4500 62 4500-5000 48 Find the median life.

Calculate coefficient of variation from the following data: Income (in Rs.) 1000-1700 1700-2400 2400-3100 3100-3800 3800-4500 4500-5200 No. o families 12 18 20 25 35 10

The following table gives the distribution of the life - time of 400 neon lamps. {:("Lif time (in hours)","Number of lamps"),(1500-2000,14),(2000-2500,56),(2500-3000,60),(3000-3500,86),(3500-4000,74),(4000-4500,62),(4500-5000,48):} Find the median life -time of a lamp .

The following data gives the distribution of total household expenditure (in rupees) of manual workers in a city: Expenditure (Rs.) Frequency Expenditure ( Rs.) Frequency 1000-1500 24 3000-3500 30 1500-2000 40 3500-4000 22 2000-2500 33 4000-4500 16 2500-3000 28 4500-5000 7 Find the average expenditure which is being done by the maximum number of manual workers.

The following table gives the distribution of the lifetime of 400 neon lamps : {:("Lifetime (in hours) ","Number of lamps "),(" "1500-2000," "14),(" "2000-2500," "56),(" "2500-3000," "60),(" "3000-3500," "86),(" "3500-4000," "74),(" "4000-4500," "62),(" "4500-5000," "48):} Find the median of a lamp.

The given distribution shows the number of runs scored by some top batsmen of the world in one-day international cricket matches. Runs scored 3000-4000 4000-5000 5000-6000 6000-7000 7000-8000 8000-9000 9000-10000 10000-11000 No. of batsmen 4 18 9 7 6 3 1 1. Find the mode of the data.

The following data gives the distribution of total monthly household expenditure of 200 families of a village .. Find the modal monthly expenditure of the families. Also, find the mean monthly expenditure: {:("Expenditure (Rs)","Number of families"),(1000-1500,24),(1500-2000,40),(2000-2500,33),(2500-3000,28),(3000-3500,30),(3500-4000,22),(4000-4500,16),(4500-5000,7):}

Find the mean and standard deviation for the following frequency distribution: The follwing table gives the income of 100 families . Find the variance for the data.