Question
Suppose a population A has 100 observations 101, 102,……200 and another population B has 100 observation 151, 152….., 250. If VA,VB represent the variances of the two populations respectively, then VAVB is
Answer: Option C
:
C
Population B observations are 151, 152, ….., 250
Let y, be these observations
Shifting the origin zi=yi−50
The values of these observations are 100, 101, ….., 200.
∴VA=VB
( ∵ Variance is independent of shifting the origin).
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:
C
Population B observations are 151, 152, ….., 250
Let y, be these observations
Shifting the origin zi=yi−50
The values of these observations are 100, 101, ….., 200.
∴VA=VB
( ∵ Variance is independent of shifting the origin).
Was this answer helpful ?
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