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3- Briefly define the following concepts: (Do not write only formula. One or two sentences are sufficient for explanation) a. What is covariance, correlation

3- Briefly define the following concepts: (Do not write only formula. One or two sentences are sufficient for explanation) a. What is covariance, correlation and correlation coefficient? What are their differences? b. Does correlation indicate causation? c. What is the relation between independence and covariance?

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