Following are the marks obtained by 20 students in statistics. Find out coefficient of variation of the marks.

Following data gives the marks obtained by 100 students in a test. Find the median

Marks obtained by 100 students of a class are given below. Find out range and coefficient of range of the marks.

Consider the following data in respect of marks of 50 students in mathematics and physics. Find coefficient of variation of mathematics and physics.

The marks obtained by the students are as follows. Find the mode.

Following are the marks obtained by 25 students in Statistics . Prepare a frequency distribution by taking a class interval of 4 on exclusive basis.

The following data gives marks obtained by 7 students of a class. Find out standard deviation of the marks. 40,42,38,44,46,48,50

In an examination, 25 students obtained the following marks. Find out coefficient of range of the marks.

Consider the following distribution: find the coefficient of variation of marks.

Following are the marks obtained by 50 students in a unit test, which is administered for 10 marks. Find the mode of the data.

The table shows the marks obtained by 25 students in a class test. Find the mean of the marks obtained