A student obtained the following marks in percentages in his semester examination English 50, Maths 65, Statistics 70, Economics 58 and Accountancy 63. The weights of these subjects are 2, 2, 1, 1 and 1 respectively. What is the weighted arithmetic mean? (a) 60     (b) 61     (c) 62     (d) 63

A student obtained the following marks per centage in an examination English - 50, Accounts - 75, Economics - 60, B Std.-80, Hindi - 55. If weights are 2, 3, 3, 2, 1, respectively allotted to the subjects, his weighted mean is

A candidate obtained the following percentage of marks in an examination English 60, Maths 90, Physics 75, Chemistry 66. If weighs 2, 4, 3, 3 are allotted to these subjects respectively, then the weight mean is given by

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

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.

A candidate obtains the marks in subjects English 60 Hindi 75 , Mathematics 63 , Physics 59 and Chemistry 55 . In the weights of 1,2,1,3,3 respectively are alloted to the subjects then the candidates weighted mean is

The average marks in Science subject of a class of 20 students is 68. If the marks of two students were misread as 48 and 65 instead of the actual marks 72 and 61 respectively, what would be the correct average? (a) 66 (b) 68.5 (c) 69 (d) 69.5 (e) 70

In a class with a certain number of students, if one student weighing 50 kg is added then the average weight of the class increases by 1 kg. If one more student weighing 50 kg is added, then the average weight of the class increases by 1.5 kg over the original average. What is the original average weight (in kg) of the class? (a) 2 (b) 4 (c) 46 (d) 47