AnswersNY-Algebra I Term 2 HillcrestSolving Linear-Quadratic Systems

Describing Data Answers

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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
2
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A survey was taken of a random sampling of residents of New York City and Los Angeles to compare how many of them own a car.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 LA residents who own a car than NYC residents who do.
C
The total number of people in the poll who own a car is 4,120.
D
More people in the poll own a car than do not own a car.
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

Sal recorded the number of crackers in each snack-sized package he opened.Which statement must be true according to the box plot?

Question illustration
A
The data is symmetric, and the lowest number of crackers in a package was 7.
B
The data is symmetric, and the lowest number of crackers in a package was 8.
C
The data is skewed, and the lowest number of crackers in a package was 7.
D
The data is skewed, and the lowest number of crackers in a package was 8.
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

Darren kept track of the number of e-mails he received from one of his customers each day for 14 days on the dot plot.Which statement must be true according to the dot plot?

Question illustration
A
The data is skewed left and shows that on half of the days, Darren received 11 or 12 e-mails from the customer.
B
The data is skewed left and shows that on half of the days, Darren received 7 to 9 e-mails from the customer.
C
The data is skewed right and shows that on half of the days, Darren received 11 or 12 e-mails from the customer.
D
The data is skewed right and shows that on half of the days, Darren received 7 to 9 e-mails from the customer.
7

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.
8

The ages of the people in attendance at the showing of an award-winning foreign film are shown below.

Question illustration
A
The data is symmetrical, showing that the majority of the attendees were between the ages of 30 and 50.
B
The data is symmetrical, showing that the majority of the attendees were between the ages of 21 and 60.
C
The data is skewed, showing that the majority of the attendees were between the ages of 30 and 50.
D
The data is skewed, showing that the majority of the attendees were between the ages of 21 and 60.
9

A cell phone company wants to determine the average amount of data that their smart phone customers use each month. Which group would best represent a sample of the population?

A
one thousand of their customers with the most expensive monthly plans
B
one thousand of their customers who most recently signed up with the company
C
one thousand of their customers with a current smart phone data plan
D
one thousand of their customers who called in for technical support
10

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.

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