For the variables X, Y and Z, rxy = 0.80, rxz = 0.64, and ryz = 0.79, the square of multiple correlation coefficient  is:

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  1. 0.43
  2. 0.33
  3. 0.53
  4. 0.64

Answer (Detailed Solution Below)

Option 4 : 0.64
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The square of the multiple correlation coefficient is 0.64.

Key Points

  • The multiple correlation coefficient (R) is a statistic that measures the strength of the relationship between multiple independent variables and a dependent variable.
  • The square of the multiple correlation coefficient (R^2) is a measure of the proportion of variation in the dependent variable that is explained by the independent variables.
  • The formula for  in terms of the pairwise correlations  given by 
  •   = 0.80, = 0.64, and = 0.79
  • By putting the value of above variable in the equation. 
  •  the square of the multiple correlation coefficient  
    is approximately: 0.6386 or 0.64
     

​ Additional Information

  • In this case, the square of the multiple correlation coefficient of 0.64 means that 64% of the variation in the dependent variable can be explained by the combination of the independent variables X, Y, and Z.

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