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Correlation and Regression Analysis

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Multiple Choice

 Given  $\sum xy=120, \sigma _x=8  ,\sum x^2=90,\sigma _ y=7 ,n=10$ ; where x and y are deviations from mean, the  correlation coefficient is 

  1. $0.21$
  2. $0.9$
  3. $0.36$
  4. $0.6$
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