Question 15 of 16 1.0 Points Click to see additional instructions The covariance between X (number of tests) and Y (number of snacks) is: Note: Round any intermediate steps to at least 4 decimal places, if necessary (e.g. 0.1234). Round your final answer to 1 decimal place, if necessary (e.g. 0.3 or -0.3). Do not write your answer in fractions (e.g 2/3) or percent (e.g. 50%). Mark for Review What's This? Question 16 of 16 Choose from the following choices to fill in the blank: negative linear positive linear no linear quadratic There is a relationship between X (number of tests) and Y (number of snacks). 1.0 Points
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The formula for covariance is: cov(X,Y) = E[(X - E[X])(Y - E[Y])] where E[X] is the expected value of X and E[Y] is the expected value of Y. Since we don't have any information about the expected values of X and Y, we cannot calculate the covariance. Show more…
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