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here is a bivariate data set

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here is a bivariate data set.

X: 42, 18, 8, 53, 28, -15, -9

Y: 44, 56, 65, 41, 64, 91, 90

find the correlation coefficient and report it accurate to four decimal places.

r= ?

please step by step. .in regular math way.

and if you can do it too , step by step with the TI-84 ...thank you.