Practice Problems: Regression
November 4, 2008 by
Filed under Practice Problems, Regression
Item 1
If there are 6 petals on a flower, how much will an elephant plant weigh (in pounds):
Petals Weight
8 1
5 6
2 7
1 8
9 2
8 1
5 6
2 7
1 8
9 2
SSx = _____
SSy = _____
SSxy = ____
a = _____
b = _____
SSy = _____
SSxy = ____
a = _____
b = _____
Item 2
If there are 9 dolls, how many truckes will a child have:
Trucks Dolls
12 11
8 7
6 5
2 1
4 3
9 9
14 15
12 11
8 7
6 5
2 1
4 3
9 9
14 15
a = _____
b = _____
r = _____
standard error of estimate (SEE) = _____
b = _____
r = _____
standard error of estimate (SEE) = _____
Item 3
If your high school GPA is 3.3, what would you predict your college GPA to be:
High Schl College
1.0 3.9
2.5 3.7
3.3 1.4
4.0 1.0
2.3 2.9
1.0 3.9
2.5 3.7
3.3 1.4
4.0 1.0
2.3 2.9
a = _____
b = _____
b = _____
Item 4
If there are 22 ducks, how many cows will the farmer own:
Ducks Cows
3 11
6 6
9 8
11 1
15 2
4 10
5 7
3 11
6 6
9 8
11 1
15 2
4 10
5 7
a = _____
b = _____
r = _____
standard error of estimate (SEE) = _____
b = _____
r = _____
standard error of estimate (SEE) = _____
Item 5
If there are 3 doctors, how many nurses will a hospital have
Doctors Nurses
9 15
4 5
2 3
11 1
16 18
17 10
9 15
4 5
2 3
11 1
16 18
17 10
a = _____
b = _____
see = _____
b = _____
see = _____
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