The marks (maximum marks 100) obtained by 20 students in a test are given below :

Find the mean marks of the 20 students.

The marks obtained by a student in examinations are given below : 80, 72, 84, 79, 90 find the average marks of the student

The marks (out of 100) obtained by 7 students in Mathematics' examination are given below.Find the mode for these marks. 99, 100, 95, 100, 100, 60, 90

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.

The following table represent marks obtained by 100 students in a test. Find mean marks of the students.

The data regarding marks obtained by 48 students of a class in a class test is given below. Calculate the modal marks of students.

The marks of 20 students in an examination are given in the following table. Average marks of these student is:

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

The frequency distribution of the marks obtained by 28 students in a test carrying 40 marks is given below : If the mean of the above data is 20 , then find the difference between x and y .