It depends upon the demand of the situation whether we are interested in finding the average marks obtained by the students or the marks obtained by most of the students
What do we find in the first situation?

Find the mean of the marks obtained by 30 students of class IX of a schoo.

Find the probability that a student obtained marks 60 or above.

The information regarding the marks scored by 30 students in a 20 mark test of Mathematics is given below: Find the mean of the data.

(i) Find the probability of the students getting more than 40 marks. (2) Find the probability of the students getting less than 30 marks.

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 two sections.

What is the type of current obtained by finding the square of the currents and then finding their average and then fining the square root?

Find the probability that a student obtained less than 20 marks in the mathematics test .

Consider the marks obtained by 10 students in a mathematics test as given below: 55 36 95 73 60 42 25 78 75 62 Find the range of the data.

Following are the marks obtained , out of 100 by two students ravi and hashina in 10 tests. Who is more intelligent and who is more consistent?