Question

Find regression line for the data

1. X 0   1   2   3    4   5   6   7 8           

Y 11 21 31 41 51 61 71 81 91

2. X 0   2   4   6   8 10                           

Y 12 15 17 18 20 22

Answer 1

Please do the comment for any doubt. Thank you!

Using Excel<insert scatterplot<trendline<equation

Answer1:

x	y
0	11
1	21
2	31
3	41
4	51
5	61
6	71
7	81
8	91

The regression line is: y=11+10x

Answer 2:

The given data is:

x	y
0	12
2	15
4	17
6	18
8	20
10	22

The regression equation is:

y=0.943x+12.619