What does the point (58, 15.5) represent?

Someone who is 58 in. tall ran 100 yd in 15.5 seconds.

Which is a correct description of Amy's scatterplot?

D. Negative association with one outlier

Describe the association in the graph.

D. Not linear; neither positive nor negative

Under what circumstances is it cheaper to use each long distance company?

If you talk for more than 625 minutes, W.C. is cheaper.

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Data Analysis Quiz Review

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Math 8 Review - Quiz Review handout required

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Questions 11

Answers

1
If the pattern on the graph continues, estimate the value of y when x = 10.
y ≈ 6
y ≈ 8
y ≈ 12
y ≈ 10
2
What is the solution to the system of equations represented by these tables?
not enough information
y = 4x - 7 and y = 2x+3
(5, 13)
(3, 3)
3
What type of association is shown in the graph?
B. negative association
C. no association
A. positive association
D. undefined association
4
What does the point (58, 15.5) represent?
Anyone who is 58 in. tall will run 100 yd in 15.5 seconds.
Someone who is 58 in. tall ran 100 yd in 15.5 seconds.
Someone who is 15.5 in. tall ran 100 yd in 58 seconds.
58 inches is equal to 15.5 seconds.
5
Using your graph selection for #7, estimate the value of the TV 6 months after it is purchased.
$650
$800
$950
$500
6
What is the mean absolute deviation of the data set?
0
3
3.6
16
7
Which is a correct description of Amy's scatterplot?
C. Negative association with no outliers
A. Positive association with no outliers
B. Positive association with one outlier
D. Negative association with one outlier
8
How many shirts must be bought and sold to break even?
7 shirts
117 shirts
72 shirts
$72
9
Describe the association in the graph.
B. negative but not linear
C. linear because it's negative
A. positive but not linear
D. Not linear; neither positive nor negative
10
Which scatter plot shows the data and the best line of fit for the data?
Graph D
Graph C
Graph A
Graph B
11
Under what circumstances is it cheaper to use each long distance company?
International Links is always cheaper.
If you talk for less than 625 minutes, W.C. is cheaper.
If you talk for more than 625 minutes, I.L.. is cheaper.
If you talk for more than 625 minutes, W.C. is cheaper.

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