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 :

If the monthly savings of the family is Rs.3,000.What is the monthly expenditure on clothes ?

The following table gives the distribution of total household expenditure (in Rs) of mannual workers in a city. Find the mean expenditure (in Rs) per household by using on approximate method. What does mean signify?

The following table gives the distribution of different families on education. Find mean expenditure on education of a family.

The following frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality. Find the median, mean and mode of the data and compare them.

The table below shows the daily expenditure on food of 25 households in a locality. Find the mean daily expenditure on food by a suitable method.

Form the pair of linear equations in the following problems and find their solutions (if they exist) by any algebraic method :- A part of monthly expenses of a family is constant and the remaining varies with the price of wheat. When the cost of wheat is Rs 250 a quintal, the total monthly expenses of the family are Rs 1000 and when it is Rs 240 a quintal, the total monthly expenses are Rs 980. Find the total monthly expenses of the family when the cost of wheat is Rs 350 a quintal

From the pair of linear equations in the following problems and find their solutions (if they exist) by elimination method : A part of monthly expenses of a family is constant and the remaining varies with the price of wheat. When the cost of wheat is ? 500 a Quintal the total monthly expenses are ? 1500 and when it is ? 600 a quintal, the total monthly expenses are ? 1700. Find the monthly expenses whefl' the cost of wheat is ? 900 a quintal.

The screws produced by a certain machine were checked by examining samples of 7. The following table shows the distribution of 128 samples according to the number of defective items they contained. Fit a binomial distribution and find the expected frequencies if the chance of screw being defective is 1/2 . Also find the mean and variance of the fitted distribution.

Form the pair of linear equations in the following problems and find their solutions (if they exist) by any algebraic method :- The total expenditure per month of a household consists of a fixed rent of the house and mess charges depending upon the number of people sharing the house. The total monthly expenditure is ? 3900 for 2 people and 7500 for 5 people. Find the rent of the house and mess charges per head per month.

In a survey of 950 families in a village, the following distribution of children was obtained : Find the mean and standard deviation of the distribution.