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Haryana Police Constable Model Paper 4
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© examsnet.com
Question : 35
Total: 100
The mean of 13 numbers is 24. If 3 is added to each number, then what will the new mean?
24
21
27
25
Validate
Solution:
Given
:
Mean of 13 numbers is 24.
Now 3 added to each number
Formula Used
:
Mean
=
Total
of
observation
Number
of
observation
Calculation
:
Mean
=
Total
of
observation
Number
of
observation
⇒
24
=
total
of
observation
13
⇒ Total of observation = 13 × 24
⇒ Total of observation = 312
Now 3 is added to all 13 numbers.
⇒ New total = 312 + 13(3) = 312 + 39 = 351
New mean
=
351
13
⇒ New mean = 27
∴
The new mean will be 27
.
© examsnet.com
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