cm(x) N(y) x^2 xy 5 2.5 25 12.5 5.5 2 30.25 11 6 2.1 36 12.6...

cm(x)	N(y)	x^2	xy
5	2.5	25	12.5
5.5	2	30.25	11
6	2.1	36	12.6
6	1.8	36	10.8
7	1.5	49	10.5

Consider the following small data set of 5 pairs. This table lists the length of a small metal machine piece in cm and the corresponding force in N required to break it. It also contains some calculated values for your convenience.

(a) Calculate the correlation coefficient for this set. What would you conclude about the relationship between these variables? (Strong positive, weak negative, none, etc).

(b) Calculate the equation of the regression line by solving the system like in the slides.

(d) What is r^2 in this case? What does it represent?

Solutions

Expert Solution

Hopefully this will help you. If you are satisfied with the answer give it a like. Thanks.

orchestra answered 1 year ago

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