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Property 3. (Mean of the composite series ). If xi (i = 1, 2,..., k ) are the means of k component series of sizes n¡ , ( i =1, 2,...., k ) respectively, then the mean x of the composik series obtained on combining the component series is given by the formula : k 111 x1 +12 X2+ n, + N2 + ... + nk ... N¡ X¡ i=1 Ni i=1 %3D

Property 3. (Mean of the composite series ). If xi (i = 1, 2,..., k ) are the means of k component series of sizes n¡ , ( i =1, 2,...., k ) respectively, then the mean x of the composik series obtained on combining the component series is given by the formula : k 111 x1 +12 X2+ n, + N2 + ... + nk ... N¡ X¡ i=1 Ni i=1 %3D

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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Property 3. (Mean of the composite series ). If X; i = 1, 2,..., k ) are the means of k component series of sizes ni , ( i = 1, 2,..., k ) respectively, then the mean x of the composite series obtained on combining the component series is given by the formula : %3D k k 1, X1 + N2 X2 + .. + ng Ix n1 + N2 + ... + Nk + Nx Xk N¡ X; / %3D Nj %3D i=1 i=1 18
Transcribed Image Text:Property 3. (Mean of the composite series ). If X; i = 1, 2,..., k ) are the means of k component series of sizes ni , ( i = 1, 2,..., k ) respectively, then the mean x of the composite series obtained on combining the component series is given by the formula : %3D k k 1, X1 + N2 X2 + .. + ng Ix n1 + N2 + ... + Nk + Nx Xk N¡ X; / %3D Nj %3D i=1 i=1 18
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