If the population consists of numbers 1, 2, 3, 4, 5, 6 and 7, find the mean of the samples of size 2 without replacement. Construct a sampling distribution.
N=7
n=2
Number of samples "= \\frac{N!}{n!(N-n)!}"
"= \\frac{7!}{2!(7-2)!}=\\frac{42}{2}=21"
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