More Practice Problems: Regression

November 7, 2008 by  
Filed under Practice Problems, Regression

Item 6

If there are 7 professors, how many classes will be taught:

Professors Classes
1                     3
4                     8
12                   13
8                     2
7                     8
7                     9

a =
b =  
r =  
see =
If X (professors) is 7, Y (classes) will be =

Item 7

If there are 150 candles, how many flowers will a wedding have:

Candles Flowers
22                 2
8                 4
6                 9
3               11
12                 4
1                 6
16               19

a =
b =
How accurate is your prediction? (see) =
If X is 150 (candles), Y (flowers) will be =

Item 8

How much will tuition (in thousands) be in 1997:

Year Tuition
1990             1
1991             3
1992             9
1993           12
1994           16

a =  
b =
[Hint: use the last digit of the year or convert Years to your own integers]
If X (year) is 7, Y (tuition) will be =

 

Answers

 

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
SSx = _____
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
a = _____
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
a = _____
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
a = _____
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
a = _____
b = _____
see = _____