Question

For the data below, compute the Pearson correlation and find the regression equation for predicting Y from X.

X Y
1 2

2 3

4 2

5 6

8 7

Part 1:

What is SS_X?

Answer 1

the necessary calculation table is :-

x	y	x2	y2	xy
1	2	1	4	2
2	3	4	9	6
4	2	16	4	8
5	6	25	36	30
8	7	64	49	56
sum=20	sum=20	sum=110	sum=102	sum=102

part 1:-

other parts:-

the correlation coefficient be:-

the regression equation is :-

[ slope is :-

]

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