1

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Georgianna wants to use the linear model associated with the data in the table to make a prediction.

A

0 to 5 minutes

B

0 to 18 minutes

C

0 to 30 minutes

D

18 to 30 minutes

2

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Which could be a conditional relative frequency table?

A

A 4-column table with 3 rows. The first column has no label with entries C, D, total. The second column is labeled A with entries 0.25, 0.25, 0.50. The third column is labeled B with entries 0.25, 0.25, 0.50. The fourth column is labeled total with entries 0.50, 0.50, 1.0.

B

A 4-column table with 3 rows. The first column has no label with entries C, D, total. The second column is labeled A with entries 0.25, 0.35, 0.30. The third column is labeled B with entries 0.75, 0.65, 0.70. The fourth column is labeled total with entries 1.0, 1.0, 1.0.

C

A 4-column table with 3 rows. The first column has no label with entries C, D, total. The second column is labeled A with entries 0.75, 0.25, 0.50. The third column is labeled B with entries 0.25, 0.75, 0.50. The fourth column is labeled total with entries 0.50, 0.50, 1.0.

D

A 4-column table with 3 rows. The first column has no label with entries C, D, total. The second column is labeled A with entries 0.65, 0.35, 1.0. The third column is labeled B with entries 0.35, 0.65, 1.0. The fourth column is labeled total with entries 1.0, 1.0, 1.0.

3

Scientists studied a deer population for 10 years. They generated the function f(x) = 248(1.15)x to approximate the number of deer in the population x years after beginning the study. About how many deer are in the population 3 years after beginning the study?

A

251

B

377

C

856

D

1,003

4

The table shows the number of flowers in four bouquets and the total cost of each bouquet.

A

–0.57

B

–0.28

C

0.28

D

0.57

5

The table shows the number of calories in four meals and the cost of each meal.

A

a weak positive correlation

B

a strong positive correlation

C

a weak negative correlation

D

a strong negative correlation

6

Graham uses a 10 by 10 grid to model a decreasing pattern. He cuts off a section representing a percent of the current area so that the remaining area represents the next term in the pattern, rounded to nearest whole centimeter. The area after each cut is shown on the graph.

A

10%

B

20%

C

80%

D

100%

7

The chart represents a data set’s given values, predicted values (using a line of best fit for the data), and residual values.

A

g = 2 and h = –1

B

g = 28 and h = 39

C

g = –2 and h = 1

D

g = –28 and h = –39

8

Melissa collected the data in the table.

A

–3

B

–1

C

1

D

3

9

The team mascot shoots a rolled T-shirt from a special T-shirt cannon to a section of people in the stands at a basketball game. The T-shirt starts at a height of 8 feet when it leaves the cannon and 1 second later reaches a maximum height of 24 feet before coming back down to a lucky winner.

A

f(t) = –16(t – 1)2 + 24

B

f(t) = –16(t + 1)2 + 24

C

f(t) = –16(t – 1)2 – 24

D

f(t) = –16(t + 1)2 – 24

10

A conditional relative frequency table is generated by row from a set of data. The conditional relative frequencies of the two categorical variables are then compared.

A

There is likely an association between the categorical variables because the relative frequencies are similar in value.

B

An association cannot be determined between the categorical variables because the relative frequencies are similar in value.

C

An association cannot be determined between the categorical variables because the relative frequencies are not similar in value.

D

There is likely an association between the categorical variables because the relative frequencies are both close to 0.50.

11

The table shows the estimated number of lines of code written by computer programmers per hour when x people are working.

A

y = 47(1.191)x

B

y = 34(1.204)x

C

y = 26.9x – 1.3

D

y = 27x – 4

12

Which value for R in the table would most likely indicate an association between the conditional variables?

A

0.09

B

0.10

C

0.13

D

0.79

13

Daniel is on an airplane flying to a destination 825 miles away. After one hour, the pilot announces that the plane is 495 miles away from its destination airport. In another hour, the pilot announces that the plane will begin its half-hour descent for the final 165 miles.

A

d = 825 – 165t

B

d = 825 – 330t

C

d = 825 + 165t

D

d = 825 + 330t

14

The frequency table shows the results of a survey comparing the number of beach towels sold for full price and at a discount during each of the three summer months.The store owner converts the frequency table to a conditional relative frequency table by row.Which value should he use for X? Round to the nearest hundredth.

A

0.89

B

0.90

C

0.92

D

0.96

15

If a flowering tree is cared for properly, the number of blossoms produced on the tree will exponentially increase until the tree reaches maturity. Which graph could show y, the number of blossoms expected on a flowering tree, for each year after the young tree is planted, x?

A

A graph shows age of trees (years) labeled 1 to 10 on the horizontal axis and number of blossoms on the vertical axis. A line increases from 0 to 3 years then decreases from 3 to 7 years.

B

A graph shows age of trees (years) labeled 1 to 10 on the horizontal axis and number of blossoms on the vertical axis. A curved line increases from 0 to 8 years.

C

A graph shows age of trees (years) labeled 1 to 10 on the horizontal axis and number of blossoms on the vertical axis. A straight line increases from 0 to 9 years.

D

A graph shows age of trees (years) labeled 1 to 10 on the horizontal axis and number of blossoms on the vertical axis. A curved line decreases from 0 to 9 years.

16

The graph shows the best-fit regression model for a set of data comparing the number of hours spent hiking and the number of miles traveled in one day.

A

Each point in the data set falls on the regression line.

B

The regression model is an accurate representation of the distance for any number of hours hiked.

C

Each point in the data set is near the regression line.

D

The regression model is inaccurate, as it does not begin at (0, 0).

17

Which graph shows data whose r-value is most likely closest to 1?

A

A graph shows both axes unnumbered. Points show a downward trend.

B

A graph shows both axes unnumbered. Points show an upward trend.

C

A graph shows both axes unnumbered. Points show a downward trend.

D

A graph shows both axes unnumbered. Points are scattered all over the graph.

18

A 2-column table with 4 rows. The first column is labeled x with entries 0, 1, 4, 5. The second column is labeled y with entries 0, 1, 4, 5.

A

0

B

1

C

4

D

5

19

The scatterplot represents the total fee for hours renting a bike. The line of best fit for the data is y = 6.855x + 10.215.Which table shows the correct residual values for the data set?

A

A 3-column table with 5 rows. The first column is labeled x with entries 1, 2, 3, 4, 5. The second column is labeled given with entries 14.95, 25.50, 32, 38.95, 42.50. The third column is labeled residual value with entries negative 2.12, 1.575, 1.22, 1.315, negative 1.99.

B

A 3-column table with 5 rows. The first column is labeled x with entries 1, 2, 3, 4, 5. The second column is labeled given with entries 14.95, 25.50, 32, 38.95, 42.50. The third column is labeled residual value with entries 2.12, negative 1.575, negative 1.22, negative 1.315, 1.99.

C

A 3-column table with 5 rows. The first column is labeled x with entries 1, 2, 3, 4, 5. The second column is labeled given with entries 14.95, 25.50, 32, 38.95, 42.50. The third column is labeled residual value with entries 2.12, negative 1.575, 1.22, negative 1.315, 1.99.

D

A 3-column table with 5 rows. The first column is labeled x with entries 1, 2, 3, 4, 5. The second column is labeled given with entries 14.95, 25.50, 32, 38.95, 42.50. The third column is labeled residual value with entries negative 2.12, 1.575, negative 1.22, 1.315, negative 1.99.

20

A data set is shown in the table. The line of best fit modeling the data is y = 2.69x – 7.95.

A

–0.88

B

–0.12

C

0.12

D

0.88

Chapter 10 Part 2 Unit TEST: Data Analysis and Displays Answers

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