Which formula is used to calculate the standard deviation of sample data?
X₁-
, - ²)² · ( - - - - - - - - - - ~~
X2-X
+
n-1
(x₁ -μ)² + (x₂-μ)² +...+(XN−μ)²
= = ) * + (x = *) * =
N
O
S=
02-
Oa-
O
(x₁ −μ)² + (x₂ − µ)² +...+(XN−μ)²
N
ETET GJ
S=
+