Question

A student gets 35 marks in theory paper, 15 marks in practical examination and 5 marks in oral

examination of a subject. The school gives weight 4, 2 and 1 respectively to these types of

examinations. Find the weighted mean of marks for this student.​

Answer 1

Answer:

the weight mean is 25

Step-by-step explanation:

here X1= 35 ,

X2= 15,

X3= 4 ,

W1= 4 ,

W2=2,

W3=1

_

weighted mean Xw = w1x1 + w2x2+w3x3

——————————

w1 +w2 + w3

= 4(35)+2(15)+1(5)

—————————

4+2+1

= 140+30+5

—————

4+2+1

= 175

——

7

=25

thus , the weighted mean of marks of this students is 25.

Answer 2

Given : A student gets 35 marks in theory paper, 15 marks in practical examination and 5 marks in oral  examination of a subject. The school gives weight 4, 2 and 1 respectively

To Find : the weighted mean of marks for this student.

Solution:

Marks      Weightage        Marks  * weightage

35                 4                       140

15                  2                         30

5                    1                           5

                     7                       175

weighted mean of marks  = 175/7

= 25      

the weighted mean of marks for this student. = 25

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