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Calculate the sample covariance between daily coughs and the number of cough drops consumed. Cough Cough Drop 0 0 12 5 31 9 18 5

Calculate the sample covariance between daily coughs and the number of cough drops consumed.

Cough	Cough Drop
0	0
12	5
31	9
18	5
5	4
35	11
28	7
21	6
19	5
0	1
14	4
9	3

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