While calculating the coefficient of correlation between two variables x and y from 25 pairs of observation, obtained the following results: n= 25, ∑x= 125, ∑x2 = 650, ∑y= 100, ∑y2= 460, ∑xy= 508 At the time of checking, it was observed that two pairs of observations were incorrect. Following tables give detailed information about incorrect observation used and correct observation which should have been used. Find the correct value of ‘r’. Give detailed explanations with solution and interpretation. Incorrect observation used : x 6 8 y 14 6 Correct Observation used : x 8 6 y 12 8
While calculating the coefficient of correlation between two variables x and y from 25 pairs of observation, obtained the following results: n= 25, ∑x= 125, ∑x2 = 650, ∑y= 100, ∑y2= 460, ∑xy= 508 At the time of checking, it was observed that two pairs of observations were incorrect. Following tables give detailed information about incorrect observation used and correct observation which should have been used. Find the correct value of ‘r’. Give detailed explanations with solution and interpretation. Incorrect observation used : x 6 8 y 14 6 Correct Observation used : x 8 6 y 12 8
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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While calculating the coefficient of
n= 25, ∑x= 125, ∑x2 = 650, ∑y= 100, ∑y2= 460, ∑xy= 508
At the time of checking, it was observed that two pairs of observations were incorrect. Following tables give detailed information about incorrect observation used and correct observation which should have been used. Find the correct value of ‘r’. Give detailed explanations with solution and interpretation.
Incorrect observation used : x 6 8
y 14 6
Correct Observation used : x 8 6
y 12 8
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