Which formula is used to calculate the standard deviation of sample data?
O
S=
02-
X₁
+ X₂-X
2
2
n-1
(X₁-μ)² + (X₂-H)²+...+ (XN-H)²
N
+ X₂-X
(X₁ − µ)² + (X₂− H)² +….…..+ (XN−H)²
N
2