Describing Data

Question 1

Use the dot plot to complete the statements.

Revolt · Accepted Answer

The dot plot shows that students answered 4 questions incorrectly on the quiz.: 2; The most frequent number of questions answered incorrectly was .: 5; The data distribution is .: symmetrical

Question 2

Use the drop-down menus to identify the method used to collect data for each scenario.

Revolt · Accepted Answer

✔ observational study; While standing in front of the school, Jace recorded the number of students who walked, rode their bikes, took the bus, and were driven there.: observational study; Noah researched statistics online about the percentage of babies born with brown eyes.: published data; Lara knew that she had a 25% chance of winning a contest, so she flipped two coins repeatedly to determine how many times two heads occurred.: simulation

Question 3

observational study✔ published datasimulationsurvey

Revolt · Accepted Answer

✔ published data

Question 4

experimentobservational study✔ simulationsurvey

Revolt · Accepted Answer

✔ simulation

Question 5

Which surveys illustrate an example of qualitative data? Check all that apply.the time, in minutes, it took students to finish their examsthe eye color of students involved in after-school activitiesthe characteristics of different types of birdsthe scores on the last examthe weights of different books

Revolt · Accepted Answer

the eye color of students involved in after-school activities; the characteristics of different types of birds

Question 6

A math teacher wants to find out the average number of hours his students spend working on their math homework for his class each week. Which group would best represent a sample of the population?

Revolt · Accepted Answer

30 students selected from his class rosters

Question 7

Maria wants to take a survey to predict who will win the election for her town’s mayor. Which samples are most likely to be biased? Check all that apply.the residents of every other house on her streetthe subscribers to a golf magazinethe people at the computer store at the mallevery 100th person from the town’s phone registryevery 10th person who walks down the main street in her town

Revolt · Accepted Answer

the residents of every other house on her street; the subscribers to a golf magazine; the people at the computer store at the mall

Question 8

Which statement is true about Anja’s claim?

Revolt · Accepted Answer

She is correct; the histogram is skewed to the right because there is less data on the right side.

Question 9

Which statements are correct about the two-way frequency table? Check all that apply.

Revolt · Accepted Answer

There is a greater percentage of 10th graders who do not have a sibling than 9th graders who do not have a sibling.; The total number of students in the poll who have a sibling is 116.; More 9th graders were polled than 10th graders.

Question 10

Which statement is true about the box plot?

Revolt · Accepted Answer

More of the children were close to 12 years old than 6 years old.

Describing Data Answers

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