Sabine records the daily heights of a random
sample of bamboo stalks, in inches. They are:
20, 19, 17, 16, 18, 15, 20, 21
Consider the formulas:
As² = (x₁ - x² + (x₂-x² + ... + (x₂-x²
n-1
B: s=
√(x₁ - x)² + (x₂ − x)² + + (x₂-x)²
- .
R-1
Co² = (x₁ -μ)² + (x₂-µ)² + ... + (xx − µ)²
N
D: σ=
(x₁ − µ)² + (x2 − µ)² +….……. + (xx − µ}²
N
Which formula should you use for variance?
Which formula should you use for standard
deviation? [
RETRY✔