A survey of 800 people who “binge-watch” were asked how many episodes is too many to watch in one viewing session. The results are displayed in the bar chart. How is the bar chart misleading?

They should have used a pie chart instead of a bar graph.

The y-axis scale is not the same between each notch.

It does not show the different categories of binge-watching.

It does not provide the total number of people surveyed.

A study of 68,946 French volunteers found that the respondents who ate the most organic food had a smaller risk of developing cancer than the other respondents. Furthermore, the difference was determined to be statistically significant. Is it reasonable to say that eating more organic food will decrease the risk of developing cancer, based on the study of French volunteers?

No, because there could be confounding variables

No, because cause and effect requires the study to be an experiment

Yes, because the study found a statistically significant difference

Yes, because the sample size was large

Identify the independent and dependent variables for each study. People who walk at least 3 miles a day are randomly selected, and their blood triglyceride levels are measured to determine if the number of miles that they walk has an influence on these levels.

Independent: number of miles walked

Independent: triglyceride levels

Dependent: number of miles walked

Identify the independent and dependent variables for each study. Employees of a business were placed into two groups. One group were required to work a 9am to 5pm schedule. The other group was permitted a more flexible 8 hour schedule. All of the employees were interviewed about job satisfaction.

Independent: work schedule group

Mr. Chen wants to know if student-made outlines improve performance on algebra tests. He prepares two review assignments for his students. One assignment just gives a list of exercises from the textbook. The other requires students to make an outline of the ideas that the test covers and then gives the same list of exercises. Each of the 28 students then took the same 50-minute test, which Mr. Chen graded himself. Identify the population.

Mr. Chen's class of 28 Algebra students

Mr. Chen wants to know if student-made outlines improve performance on algebra tests. He prepares two review assignments for his students. One assignment just gives a list of exercises from the textbook. The other requires students to make an outline of the ideas that the test covers and then gives the same list of exercises. Each of the 28 students then took the same 50-minute test, which Mr. Chen graded himself. Identify the sample.

Mr. Chen's class of 28 Algebra students

Mr. Chen wants to know if student-made outlines improve performance on algebra tests. He prepares two review assignments for his students. One assignment just gives a list of exercises from the textbook. The other requires students to make an outline of the ideas that the test covers and then gives the same list of exercises. Each of the 28 students then took the same 50-minute test, which Mr. Chen graded himself. Explain why Mr. Chen would assign the outline randomly.

To eliminate any chances of variability

To prevent friends from copying

Mr. Chen wants to know if student-made outlines improve performance on algebra tests. He prepares two review assignments for his students. One assignment just gives a list of exercises from the textbook. The other requires students to make an outline of the ideas that the test covers and then gives the same list of exercises. Each of the 28 students then took the same 50-minute test, which Mr. Chen graded himself. Explain why Mr. Chen included a group that didn't prepare an outline.

To compare the results between a treatment group and a control group

To prevent friends from copying

To decrease the amount of grading he needs to do

Mr. Chen wants to know if student-made outlines improve performance on algebra tests. He prepares two review assignments for his students. One assignment just gives a list of exercises from the textbook. The other requires students to make an outline of the ideas that the test covers and then gives the same list of exercises. Each of the 28 students then took the same 50-minute test, which Mr. Chen graded himself. Identify two variables that Mr. Chen kept the same during the experiment.

Both groups did the review exercises

Both groups took the same 50-minute test

All students created an outline

Mr. Chen wants to know if student-made outlines improve performance on algebra tests. He prepares two review assignments for his students. One assignment just gives a list of exercises from the textbook. The other requires students to make an outline of the ideas that the test covers and then gives the same list of exercises. Each of the 28 students then took the same 50-minute test, which Mr. Chen graded himself. Explain why it was important for Mr. Chen to keep those variables the same during the experiment.

To prevent confounding variables

To keep it fair for the students

Stats: Review Chapter 1 - What is Statistics?

Authored by Diana Boehmer

Mathematics

12th Grade

CCSS covered

Used 9+ times

Stats: Review Chapter 1 - What is Statistics?

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MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Here is some information about the first 10 U.S. presidents. Identify the individuals in this data set.

Name

Political Party

Age at Inauguration

Age at Death

State of Birth

Here is some information about the first 10 U.S. presidents. Classify each variable as categorical or quantitative.
Political Party

Categorical

Quantitative

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Here is some information about the first 10 U.S. presidents. Classify each variable as categorical or quantitative.
Age at Inauguration

Categorical

Quantitative

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Here is some information about the first 10 U.S. presidents. Classify each variable as categorical or quantitative.
Age at Death

Categorical

Quantitative

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Here is some information about the first 10 U.S. presidents. Classify each variable as categorical or quantitative.
State of Birth

Categorical

Quantitative

MULTIPLE SELECT QUESTION

15 mins • 1 pt

Australian high school students were asked to choose their favorite type of music from a list. The bar chart compares the preferences for samples of 250 students in consecutive years. Compare the distribution of music preferences for the two years.

Hip Hop really increased in popularity from year 1 to year 2.

Alternative might have stolen some of the favorite votes from Rock since they're similar and Rock dropped in percent.

Hip Hop is the most popular music.

Jazz lots all of its votes.

No one likes Jazz.

Australian high school students were asked to choose their favorite type of music from a list. The bar chart compares the preferences for samples of 250 students in consecutive years. Approximately how many students selected Rock as their favorite type of music during year 2?

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Stats: Review Chapter 1 - What is Statistics?

Here is some information about the first 10 U.S. presidents. Identify the individuals in this data set.

Here is some information about the first 10 U.S. presidents. Classify each variable as categorical or quantitative.Political Party

Here is some information about the first 10 U.S. presidents. Classify each variable as categorical or quantitative.Age at Inauguration

Here is some information about the first 10 U.S. presidents. Classify each variable as categorical or quantitative.Age at Death

Here is some information about the first 10 U.S. presidents. Classify each variable as categorical or quantitative.State of Birth

Australian high school students were asked to choose their favorite type of music from a list. The bar chart compares the preferences for samples of 250 students in consecutive years. Compare the distribution of music preferences for the two years.

Australian high school students were asked to choose their favorite type of music from a list. The bar chart compares the preferences for samples of 250 students in consecutive years. Approximately how many students selected Rock as their favorite type of music during year 2?

A survey of 800 people who “binge-watch” were asked how many episodes is too many to watch in one viewing session. The results are displayed in the bar chart.How is the bar chart misleading?

Classify each sample as random, systematic, stratified, or cluster.In a large school district, all teachers from two buildings are interviewed to determine whether they believe the students have less homework to do now than in previous years.

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Discover more resources for Mathematics

Here is some information about the first 10 U.S. presidents. Classify each variable as categorical or quantitative.
Political Party

Here is some information about the first 10 U.S. presidents. Classify each variable as categorical or quantitative.
Age at Inauguration

Here is some information about the first 10 U.S. presidents. Classify each variable as categorical or quantitative.
Age at Death

Here is some information about the first 10 U.S. presidents. Classify each variable as categorical or quantitative.
State of Birth

A survey of 800 people who “binge-watch” were asked how many episodes is too many to watch in one viewing session. The results are displayed in the bar chart.
How is the bar chart misleading?

Classify each sample as random, systematic, stratified, or cluster.
In a large school district, all teachers from two buildings are interviewed to determine whether they believe the students have less homework to do now than in previous years.