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Solution:


The equation of the line of regression of y on x

Inserting x = 38, we get

y - 33 = 0.74 ( 38 - 33 )

y - 33 = 0.74 ´ 5

y - 33 = 3.7

        y = 3.7 + 33

        y = 36.7 = 37 ( approximately )

Therefore, the Judge B would have given 37 marks to 8th performance.

Index

6. 1 Introduction
6. 2 Correlation
6. 3 Types of Correlation
6. 4 Degrees of Correlation
6. 5 Methods of determining correlation
6. 6 Coefficients of Correlation for Bivariate Grouped Data
6. 7 Probable Error
6. 8 Rank Correlation Coefficient
6. 9 Linear Regression

Chapter 7





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