Multiple choice

Co-variance between two variables is

  1. The average of the product of deviations taken from their averages.

  2. A is further divided by the product of their standard deviations.

  3. A is further divided by the product of their arithmetic averages.

  4. None of these
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A Correct answer
Explanation

Covariance is a measure of how much two random variables change together.

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