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Study the following information:

Covariance between X and Y series = -17.8

Standard deviation of X series = 6.6

Standard deviation of Y series = 4.2

No. of pairs of observation = 20

The coefficient of correlation is

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UGC Paper 2: Commerce 26th June 2019
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  1. -0.642
  2. 0.642
  3. 0.253
  4. -0.253

Answer (Detailed Solution Below)

Option 1 : -0.642
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Detailed Solution

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The Coefficient Of Correlation Between X And Y = Covariance / (Standard Deviation Of X x Standard Deviation Of Y)

                                                                              = -17.8 / (6.6 x 4.2) 

                                                                              = - 0.642

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