Question

Please round all answers to 2 decimal places. Given the table below, use your calculator to...

Please round all answers to 2 decimal places.

Given the table below, use your calculator to find the Correlation Coefficient

xx 3.6 5.6 9.3 5.5 9.1 1.2
yy 8.9 19.3 22 12.6 27.7 10.5

Homework Answers

Answer #1

Solution :

X Y XY X^2 Y^2
3.6 8.9 32.04 12.96 79.21
5.6 19.3 108.08 31.36 372.49
9.3 22 204.6 86.49 484
5.5 12.6 69.3 30.25 158.76
9.1 27.7 252.07 82.81 767.29
1.2 10.5 12.6 1.44 110.25
n 6
sum(XY) 678.69
sum(X) 34.30
sum(Y) 101.00
sum(X^2) 245.31
sum(Y^2) 1972.00
Numerator 607.84
Denominator 694.08
r 0.8757

The Correlation Coefficient r,

r = 0.8757

r = 0.88

Answer :   The Correlation Coefficient r is 0.88

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