The following distribution gives the state-wise teacher-student ratio in higher secondary schools of India. Find the mode and mean of this data.Interpret, the two measures.

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

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 following distribution gives the time taken by 25 students to solve a problem. Draw a histogram to represent the above Data.

The table below gives the expenditure of distribution of female teachers in the primary schools of rural areas of various states and U.T. of India. Find the mean percentage of female teachers by step deviation method.

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 different families on education. Find mean expenditure on education of a family.

The following table gives the distribution of students of two sections according to the marks obtained by them : : Represent the marks of the students of both the sections on the same graph by two frequency polygons. From the two polygons compare the performance of the twosections.

There are 102 teachers in a school of 3300 students.Find ratio of the number of teachers to the numbe of students.