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What is the effect on the standard error (SE) if we choose a sample size of...

What is the effect on the standard error (SE) if we choose a sample size of N=100 rather than the old value of 900?

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Answer #1

Solution :

If we decrease the sample size the standard error will increases .

For example .

= 10

N = 900

= / N = 10 / 900 = 0.33

If we tale, N = 100

= / N = 10 / 100 = 1

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