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Statistics Practice Test 1

Question : 4 of 37

Marks: +1, -0

Solution: 👈: Video Solution

Mean of 4 observations = 20

Sum of 4 new observations = 20 × 4 = 80

When constant c is added to each observation, the mean becomes = 22

Sum of 4 new observations = 22 × 4 = 88

Total C is added in 4 observation = 88 - 80 = 8

The value of C

=\frac{8}{4}=2

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