AnswersCommon Core Algebra I - MA3109 B-CR 4Q 0.25 credit due 1029 or will be grade of FAnalyzing Residuals

Analyzing Residuals — Unit test Answers

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1
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The table shows the number of pages in the books in Box A and the number of pages in the books in Box B.Which statement is true about the data?

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The mean of Box A is greater than the mean of Box B.
T
The mean of Box B is greater than the mean of Box A.
T
The median of Box A is greater than the median of Box B.
T
The median of Box B is greater than the median of Box A.
2
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The table shows the value of a savings bond that doubles in value after 5 years.

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A
The bond has an original value of $57.70 and grows at a rate of 15%.
B
The bond has an original value of $57.50 and grows at a rate of 85%.
C
The bond had an original value of $50 and grows at a rate of 15%.
D
The bond has an original value of $50 and grows at a rate of 85%.
3

The end of a hose was resting on the ground, pointing up an angle. Sal measured the path of the water coming out of the hose and found that it could be modeled using the equation f(x) = –0.3x2 + 2x, where f(x) is the height of the path of the water above the ground, in feet, and x is the horizontal distance of the path of the water from the end of the hose, in feet.

3
3.2 feet
4
4.8 feet
5
5.6 feet
6
6.8 feet
4

The table shows the shoe sizes of women of different ages.

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A
a weak positive correlation
B
a strong positive correlation
C
a weak negative correlation
D
a strong negative correlation
5

The histogram represents the daily low and high temperatures in a city during March. Which comparison of the distributions is true?

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The distribution of low temperatures is nearly symmetric, and the distribution of high temperatures is nearly symmetric.
T
The distribution of low temperatures is skewed right, and the distribution of high temperatures is nearly symmetric.
T
The distribution of low temperatures is nearly symmetric, and the distribution of high temperatures is skewed right.
T
The distribution of low temperatures is skewed right, and the distribution of high temperatures is skewed right.
6

The table shows a company’s profit based on the number of pounds of food produced.

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$
$5,150
$
$5,300
$
$10,150
$
$11,000
7

The mean score on a physics test was 75 points. Amy’s score was 67 points, which was 2 standard deviations below the mean.

A
2
B
4
C
8
D
16
8

The graph shows a distribution of data with a standard deviation of 6.

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A
It is within 1 standard deviation of the mean.
B
It is within 2 standard deviations of the mean.
C
It is exactly 3 standard deviations from the mean.
D
It is exactly 4 standard deviations from the mean.
9

The graph represents a distribution of data.

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A
5
B
10
C
30
D
50
10

Which best describes the strength of the model with an r-value of –0.93?

A
a weak positive correlation
B
a strong positive correlation
C
a weak negative correlation
D
a strong negative correlation
11

The graph shows the exponential regression model for data representing a rabbit population after x years.

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The graph of the regression model is limited to whole-number values for x.
T
The graph of the regression model is limited to whole-number values for y.
T
The graph of the regression model cannot be used to approximate the population size for year 1.
T
The graph of the regression model can be used to predict the population size for any number of years in the future.
12

The graph shows the relationship between the price of frozen yogurt and the number of ounces of frozen yogurt sold at different stores and restaurants.

Question illustration
A
1.5
B
2
C
13
D
15.5
13

A graph shows the horizontal axis numbered 1 to 5 and the vertical axis numbered 1 to 5. Points and a line show a downward trend.

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–
–0.83
–
–0.21
0
0.21
0
0.83
14

Which data set has an outlier?

A
6, 13, 13, 15, 15, 18, 18, 22
B
4, 4, 4, 8, 9, 9, 11, 18
C
2, 3, 5, 7, 8, 8, 9, 10, 12, 17
D
3, 6, 7, 7, 8, 8, 9, 9, 9, 10
15

The table shows the average number of hours of daylight per day for the last four months of the year.

Question illustration
A
–0.993
B
–0.791
C
0.791
D
0.993

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