# Algebra Practice Sheets

Algebra I
Linear Regression WS I
Name: ___________________________________
Write a linear model for each set of data. Round the slope and y-intercept to the nearest thousandth.
Age
Average amount of
chocolate consumed
1. Linear Regression Line _______________________________
1
0.5 lbs
2. Use the linear regression formula to predict how much chocolate an
5
11 lbs
individual will consume by the time he/she is 99 years old. Round to the
9
20 lbs
nearest tenth.
14
29.5 lbs
18
40 lbs
3. At what age will one consume 150 lbs of chocolate? Round to the nearest whole number?
Height of
diving board
Olympic divers
4. Linear Regression Line ________________________
0.5 m
1
1 m
2
5. If a diver were to dive off a board that is the same
1.5 m
2.5
height as the Washington Monument (55m), how many flips
3 m
4
could he/she do? Round to the nearest whole number.
5 m
5
10 m
9
6. How high must the board be in order to do 20 flips? Round to the nearest tenth.
Dog
1
2
3
4
5
6
7
Human
15
24
28
32
37
42
47
7. Linear Regression Line ______________________________
8. Determine how many dog years are comparable to 100 human years. Round to the nearest year.
9. Determine how many human years are comparable to 13 dog years. Round to the nearest year.