AnswersCR27 ALG 1-1200310-S2-Degele-VOL7006PDescribing Data

Describing Data Answers

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An Internet and cable-television supplier surveyed a random sample of their customers. The results are shown in the table.Which statement about the two-way frequency table is true?

Question illustration
A
The survey represents quantitative data.
B
There is a greater percentage of Internet customers who are not satisfied than cable television customers who are not satisfied.
C
About half of the customers surveyed are cable-television customers.
D
About one-fourth of the cable-television customers are not satisfied.
2
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Valeriya wants to determine the likely voting outcome for the new town council election. Which sample is likely to yield the most biased results?

A
every tenth person working for the largest corporation in town
B
ten people chosen at random from each page of the town’s phone list
C
every tenth person walking down Main Street in town on a variety of days and times of the day
D
ten eligible voters chosen at random from each of the different neighborhoods in town
3

A poll is being taken on Wednesday to predict which movie will be the most popular at the city’s movie theaters the next weekend: an animated movie, an action movie, or a romantic comedy. Which group would best represent a sample population?

A
Every fifth person coming out of the high school.
B
Every fifth person in the mall’s food court at lunchtime.
C
Every fifth person coming out of the downtown grocery store at different times throughout the day.
D
Every fifth person walking down the street in several different locations throughout town at different times of day.
4

best

E
Every tenth student staying after school.
E
Every tenth student in the library at lunch.
E
Every tenth student in the main hallway between class.
E
Every tenth student in the student section at the school football game.
5

Which sample fairly represents the population? Select two options.

A
measuring the height of every fiftieth person on the school roster to determine the average height of the boys in the school
B
calling every third person on the soccer team’s roster to determine how many of the team members have completed their fundraising assignment
C
observing every person walking down Main Street at 5 p.m. one evening to determine the percentage of people who wear glasses
D
sending a confidential e-mail survey to every one-hundredth parent in the school district to determine the overall satisfaction of the residents of the town
E
taking a poll in the lunch room (where all students currently have to eat lunch) to determine the number of students who want to be able to leave campus during lunch
6

Gustavo is in a contest where he will win one of four possible prizes. He creates a four-part spinner to represent the four prizes that he has an equal chance of winning: a video game system, a bicycle, a watch, and a gift card. He spins the spinner several times to demonstrate the likelihood of winning a certain prize.

A
Gustavo used an experiment where the data is qualitative.
B
Gustavo used an experiment where the data is quantitative.
C
Gustavo used a simulation where the data is qualitative.
D
Gustavo used a simulation where the data is quantitative.
7

The number of points that Shira scored each basketball game so far this season is shown on the dot plot.

Question illustration
A
The data is skewed to the right and shows that she never scored fewer than 2 points or more than 12 points in a game.
B
The data is skewed to the right and shows that she scored 11 points in more games than all of the other games combined.
C
The data is skewed to the left and shows that she never scored fewer than 2 points or more than 12 points in a game.
D
The data is skewed to the left and shows that she scored 11 points in more games than all of the other games combined.
8

Ryan called each school in the district to determine whether or not they have a recycling program. What is true about Ryan’s data collection?

R
Ryan conducted a survey where he asked about qualitative data.
R
Ryan conducted a survey where he asked about quantitative data.
R
Ryan conducted an observational study where he asked about qualitative data.
R
Ryan conducted an observational study where he asked about quantitative data.
9

Irina’s basketball team has a 1 in 6 chance of winning the first-place trophy. She rolled a six-sided number cube repeatedly, assigning her team a number from 1 to 6 to demonstrate the probability that her team would win.

s
survey
s
simulation
e
experiment
o
observational study
10

Janie asked all of her classmates about the number of pets they have in their household. Her findings are shown in the table.Which statement about the two-way frequency table is true?

Question illustration
A
The survey represents quantitative data.
B
There is a greater percentage of girls who do not own a pet than boys who do not own a pet.
C
The total number of girls who own 2 or more pets is 2.
D
More girls do not own a pet than do own a pet.

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