A student obtains the following marks ( out of maximum of 100) in different subjects with different weights. Calculate weighted mean. Also calculate simple mean.

A student obtains the following percentage in an examination. (i) Find out simple mean marks , if all subjectes are given equal weight. (ii) Find out weighted mean marks, if the respective weights are 1,2,1,2,3

Given below are the marks ( out of maximum of 100) of 10 students in an examination. Calculate the simple arithmetic mean of the marks. 90,64,79,33,85,59,60,70,40,95

Nine students of a class obtained following marks. Calculate mean deviation from median.

A student obtained 60 marks in English, 75 in Hindi, 63 in Mathematics, 59 in Economics and 55 in Statistics. Calculate weighted mean of the marks if weights are respectively 2, 1, 5, 5 and 3.

The table given below represents the marks obtained by 5 students in 4 different subjects. Each student was given marks out of 100 in each of the given subjects. The average marks per student in English is what per cent of the average marks per student in Hindi ?

The table given below represents the marks obtained by 5 students in 4 different subjects. Each student was given marks out of 100 in each of the given subjects. In which subject the total marks of all the students is highest ?

The table given below represents the marks obtained by 5 students in 4 different subjects. Each student was given marks out of 100 in each of the given subjects. Which student scored the maximum marks in all the 4 subjects taken together ?

The step frequency distribution table of the marks obtained by female students is given below. Calculate the mean marks.