Support the Monkey! Tell All your Friends and Teachers

Help / FAQ



Example The two regression equations of the variables x an y are

x = 19.13 - 0.87 y and y = 11.64 - 0.50 x

Find  (1) Mean of x’s

         (2) Mean of y’s

          (3) Correlation coefficient between x and y

Solution:

  1. Calculation of Mean

    \ Mean of x’s = 15.94 and Mean of y’s = 3.67


  2. Calculation of ‘ r ’

    x = 19.93 - 0.87 y

    Therefore,

    and y = 11.64 - 0.50 x

    Therefore,

    From (3) and (4)

      r = ± 0.66

    But regression coefficient are negative

    r = - 0.66

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





All Contents Copyright © All rights reserved.
Further Distribution Is Strictly Prohibited.


Search:
Keywords:
In Association with Amazon.com