Answer:
(a) σ² = 144
(b) s² = 12
Step-by-step explanation:
(a) Population variance σ² = ∑(X - )² / N
The arithmetic mean
σ² =
=
σ² = 144
(b)
= 12
ASCENDING ORDER
76,41,36,25,-2,-25
no
because you never multiply the divisor's
2.1/////_____\\\\\\
hope this helps
The discriminant is 225