Presidential Election of 1860 — Unit test Answers
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Jordan is calculating the slope of the trend line in the scatterplot below. How can Jordan use the plot to check the reasonableness of his answer?
A
His slope should be positive because the coordinates of all the plotted points are positive.B
His slope should be positive because the trend line is slanted up to the right.C
His slope should be negative because there are plotted points not on the line.D
His slope should be negative because the x-coordinate of each plotted point is less than the y-coordinate.22
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How many variables are displayed in a scatterplot?
A
one along the x-axis, and one along the y-axisB
one along the x-axis, and two along the y-axisC
two along the x-axis, and one along the y-axisD
two along the x-axis, and two along the y-axis23
When a scatterplot is created from a table of values, which statement is correct?
A
It is possible for two points to have the same x-coordinate and the same y-coordinate.B
It is possible for two points to have the same x-coordinate, but it is impossible for them to have the same y-coordinate.C
It is possible for two points to have the same y-coordinate, but it is impossible for them to have the same x-coordinate.D
It is impossible for two points to have the same x-coordinate or the same y-coordinate.24
What is the slope of a trend line that passes through the points (1, 3) and (10, 25)?
A
Negative StartFraction 15 Over 2 EndFraction
B
Negative one-half
C
StartFraction 22 Over 9 EndFraction
D
StartFraction 24 Over 7 EndFraction
25
The table and scatterplot show the additional plant growth measured each day for particular days. Which two points should the trend line go through to best represent the data given in this scatterplot?Time (days)Growth(inches)2131.542.75526283101.75
A
(2, 1) and (3, 1.5)B
(2, 1) and (5, 2)C
(6, 2) and (8, 2)D
(6, 2) and (10,1.75)Did you find these answers helpful?
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