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(a) For a group of 10 items, 10 10 E (X; - 2) = 40 and E X} = 495. %3D i = 1 Then find the variance of this group. (b) For 10 values X1, X2, ..., X10 of the variable X, 10 10 E X; = 110 and E (X;- 5) 2 = 1,000. Find variance of X.

(a) For a group of 10 items, 10 10 E (X; - 2) = 40 and E X} = 495. %3D i = 1 Then find the variance of this group. (b) For 10 values X1, X2, ..., X10 of the variable X, 10 10 E X; = 110 and E (X;- 5) 2 = 1,000. Find variance of X.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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(a) For a group of 10 items, 10 10 Σ X-2 = 40 and ΣΧ 495. i = / Then find the variance of this group. (b) For 10 values X1, X2, ..., X10 of the variable X, 10 10 ΣΧ=110 andΣ (-5)2-1,000. i == / i = | Find variance of X.
Transcribed Image Text:(a) For a group of 10 items, 10 10 Σ X-2 = 40 and ΣΧ 495. i = / Then find the variance of this group. (b) For 10 values X1, X2, ..., X10 of the variable X, 10 10 ΣΧ=110 andΣ (-5)2-1,000. i == / i = | Find variance of X.
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