1 2 7 9

1 2 7 9

Input
{1, 2, 7, 9}
Total
1 + 2 + 7 + 9 = 19
Statistics
mean | 4.75
median | 4.5
sample standard deviation | 3.862
Vector length
3 sqrt(15)~~11.619
Normalized vector
(1/(3 sqrt(15)), 2/(3 sqrt(15)), 7/(3 sqrt(15)), sqrt(3/5))
Possible closed form
(no form found in terms of holonomic sequences)

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