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

The marks obtained by 30 students in a examination of a class are given below . Find their average.

A student draws a cumulative frequency curve for the marks obtained by 40 students of a class as shown below. Find the median marks obtained by the students of the class. (FIGURE)

The median and mean values of the marks obtained by the students of a class are 46.67 and 45.5, respectively. Find out the mode of the marks.

The median and mean values of the marks obtained by the students of a class are 46,67 and 45.5, respectively. Find out the mode of the marks.

The marks obtained by 41 students in an examination in Math are given below: Find the average of the marks obtained by them.

Given below are the marks obtained by the students of a class. Calculate mean deviation, and its coefficient, median of data:

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

Distribution of marks obtained by 100 student of a class is given below . Find out the median marks {:("Marks",0,5,10,15,20,25,30,35,40,45),("Number of Students",4,6,15,5,8,12,28,14,3,5):}

The marks (maximum marks 100) obtained by 20 students in a test are given below : Find the mean marks of the 20 students.