Question

"If the formula is used to find the mean of the following sample, what is the value of n?

51, 37, 83, 44, 52, 19, 99, 7, 36, 88, 3

A. 12
B. 10
C. 9
D. 11"

Answer 1

`\underbrace{51, 37, 83, 44, 52, 19, 99, 7, 36, 88, 3}_(11)`

Answer: n = 11


`\overline{x}=(1)/(n)\sum\limits_(j=1)^nx_j\to\overline{x}=(1)/(11)\sum\limits_(j=1)^(11)x_j`