AnswersNJ-Algebra I CRUnit Test

Describing Data Answers

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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?

A
Ryan conducted a survey where he asked about qualitative data.
B
Ryan conducted a survey where he asked about quantitative data.
C
Ryan conducted an observational study where he asked about qualitative data.
D
Ryan conducted an observational study where he asked about quantitative data.
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Which is an example of a survey involving quantitative data?

A
the favorite food of each person
B
the number of cavities each person has had
C
the color of the walls in each person’s bedroom
D
the type of car that each person owns
3

The amount of rainfall each month over the past four years is shown below.

Question illustration
A
The data is skewed, showing that the majority of the monthly rainfall amounts was between 2.01 and 4 inches.
B
The data is skewed, showing that the majority of the monthly rainfall amounts was less than 2.01 or greater than 4 inches.
C
The data is symmetrical, showing that the majority of the monthly rainfall amounts was between 2.01 and 4 inches.
D
The data is symmetrical, showing that the majority of the monthly rainfall amounts was less than 2.01 or greater than 4 inches.
4

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
5

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.
6

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.

A
survey
B
simulation
C
experiment
D
observational study
7

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.
8

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.
9

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.
10

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.

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