The monthly profits (in Rs.) of 100 shops are distributed as follows: Profits per shop:  0-50  50-100  100-150  150-200  200-250  250-300 No. of shops:        12       18         27           20          17          6 Draw the frequency polygon for it.

We have the following data on the monthly expenditure on food (in rupees) for 30 households in a locality. (i) Obtain a frequency distribution using following class intervals: 100-150, 150-200, 200-250, 250-300, 300-350 (ii) What percentage of households spends less than Rupees 250 per month and what percentage of households spends more than Rupess 200 per month?

Find the mean of the following frequency distribution: Classes: 0-20 20-40 40-60 60-80 80-100 Frequency: 15 18 21 29 17

Find the mean of the following frequency distributions: Class: 50-70 70-90 90-110 110-130 130-150 150-170 interval Frequency: 18 12 13 27 8 22

The table below shows the daily expenditure on food of 25 households in a locality. {:("Dail expenditure (in Rs)",100-150,150-200 , 200 - 250 , 250 -300,300-350),("Number of households",4,5,12,2,2):} Find the mean daily expenditure on food by suitable method.

The sum of two numbers is 45. Their difference is 1/9 of their sum. Their L.C.M. is (a) 100 (b) 150 (c) 200 (d) 250

Find the mean deviation from the mean for the following data: Classes 0-100 100-200 200-300 300-400 400-500 500-600 600-700 700-800 Frequencies 4 8 9 10 7 5 4 3

The following table gives the distribution of total household expenditure (in rupees) of manual workers in a city. Expenditure: (in Rs.) 100-150 150-200 200-250 250-300 300-350 350-400 400-450 450-500 Frequency: 24 40 33 28 30 22 16 7 Find the average expenditure (in Rs.) per household.

The following table gives the distribution of total household expenditure (in rupees) of manual workers in a city. Expenditure (in rupees) (x_i) Frequency (f_i) 100-150 24 150-200 40 200-250 33 250-300 28 300-350 30 350-450 22 400-450 16 450-500 7 Find the average expenditure (in rupees) per household.

Find which of the following are in proportion: 8, 16, 6; 12 (ii) 6, 2, 4, 3 (iii) 150, 250, 200, 300