Question
Asked Oct 18, 2019
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​A sample of n = 16 scores has a mean of M = 65 and an estimated standard error of 2 points. What is the sample variance?
 

Question options:

a.
s2 = 4
b.
s2 = 16
c.
s2 = 64
d.
s2 = 36
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Expert Answer

Step 1

Sample size (n) = 16

Mean (M) = 65

Estimated standard error (E) = 2

Explanation:

The formula of estimated standard error is:

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E = Vn Here, s is sample standard deviation

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Step 2

Substitute 16 for n and 2 for E in the of estimated standard error formula, get:

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2 = 16 s 2x 4

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Step 3

We know that sample variance is square o...

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Sample Variance = s' =82 =64

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Math

Statistics

Measures

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