1.
What type of relationship or pattern does the scatter plot suggest?
A.
a linear relationship whose data have a positive relationship
B.
a linear relationship whose data have a negative relationship
C.
none of these
D.
no pattern
Hint
2.
Which is the best prediction equation for the data?
A.
y
= 5
x
- 19,950
B.
y
= 20
x
- 19,950
C.
y
= 10
x
- 19,950
D.
y
= 25
x
- 19,950
Hint
3.
Use a graphing calculator to find the equation of the regression line.
A.
y
=
x
- 576
B.
y
= 2
x
- 25
C.
y
= 23
x
- 21,000
D.
y
= 12
x
- 23,947
Hint
4.
Use two ordered pairs to write the equation of a best-fit line.
A.
y
= 3
x
+ 72
B.
y
= 3
x
C.
y
= 5
x
D.
y
= 5
x
+ 75
Hint
5.
Determine two points that appear to represent the data in the scatter plot. Then find and interpret the slope.
A.
Paul's test scores improve an average of 5 points with each test.
B.
Paul's test scores are neither increasing nor decreasing.
C.
Paul's test scores improve an average of 3 points with each test.
D.
Paul's test scores improve an average of 15 points with each test.
Hint