Question

Annual high temperatures in a certain location have been tracked for several years. Let XX represent...

Annual high temperatures in a certain location have been tracked for several years. Let XX represent the year and YY the high temperature. Based on the data shown below, calculate the regression line (each value to two decimal places).

y =____ x +________

x y
1 14.64
2 13.38
3 14.82
4 19.36
5 19.7
6 20.34
7 21.98
8 23.32
9 23.86
10 25.7
11 28.64
12 28.88
13 30.32
14 32.16
15 33.8
16 32.34

Homework Answers

Answer #1
X Y XY XX
1 14.64 14.64 1
2 13.38 26.76 4
3 14.82 44.46 9
4 19.36 77.44 16
5 19.7 98.5 25
6 20.34 122.04 36
7 21.98 153.86 49
8 23.32 186.56 64
9 23.86 214.74 81
10 25.7 257 100
11 28.64 315.04 121
12 28.88 346.56 144
13 30.32 394.16 169
14 32.16 450.24 196
15 33.8 507 225
16 32.34 517.44 256

y = 1.38 x + 12.23

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