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

The following table gives the distribution of the life time of 400 neon lamps : Find the median life time of a lamp.

The following table gives the literacy rate (in percentage) of 35 cities. Find the mean literacy rate.

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 :

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?

In which part the expenditure on education is maximum in 2000?

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.

The following table shows the weight of 50 persons find the mean, median, and mode.

The following table gives the enrollment in higher secondary school in 1978. Find the mean enrolment per H.S. School.

Read the following the bar graph in fig. and answer the following questions What was the expenditure on health and family planning in the year 2012-13?

Find the mean of the following distribution :