Given the following data with n=5, compute the covariance sxy. Give an exact answer. x 2 3 5 9 11
y -21 -15 -18 -10 -5
Note that ∑i=15xi=30, ∑i=15x2i=240, ,∑i=15yi=−69, ∑i=15y2i=1115
the necessary calculation table:-
xi | yi |
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2 | -21 | -42 |
3 | -15 | -45 |
5 | -18 | -90 |
9 | -10 | -90 |
11 | -5 | -55 |
sum= -322 |
the covariance (sample) is :-
i am calculating the population covariance also,for your better understanding.
(this is the population covariance)
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Given the following data with n=5, compute the covariance sxy. Give an exact answer. x 2...
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2
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