More 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