Statistics Review

There are 45 people working in a particular building. A survey on dietary habits is conducted by giving every third person in the building a questionnaire to fill out. From the questionnaire, the researcher obtains a score on the dietary habits of the 15 people.

What is the number of members in the population?

Mathematical Equivalence

ON

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CCSS.HSS.IC.B.3

CCSS.HSS.IC.A.1

Odyssey School wants to choose a new school mascot. They decide to take a survey to make the determination of what the new mascot will be. Which sample is best for this task?

• Ms. Jackson's 3rd period gym class

• The chess club

• The varsity football team

• 5 boys and 5 girls from each grade level

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CCSS.HSS.IC.B.3

CCSS.HSS.IC.A.1

A study is done to determine the attitudes of male university students towards careers. The researcher interviews 100 of the male students enrolled in a first-year course at the university. What is the sample in this situation?

• Male University Students

• The 100 male students interviewed

• The male students taking the course

• All university students

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CCSS.HSS.IC.A.1

Angela is conducting research about the most common pet owned by residents in her town.

Plan A: Telephone every fifth person whose name appears in the town telephone directory.

Plan B: Ask individuals who walk their dog in a local park.

Which plan should Angela select?

• Plan A

• Plan B

• NEITHER Plan works.

• Both Plans work.

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CCSS.HSS.IC.B.3

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

A researcher plans a study to look at the depth of cheating in high school on tests/exams. She obtains a random sample of 100 honor students as they leave an honors banquet. 99 of them agree to participate in the questionnaire. Which of the following statements are true?

• The high response rate would indicate no bias is present.

• Being a random sample would indicate that this is a survey that will give good results.

• Selection bias makes this a poorly designed survey.

• All three are true.

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CCSS.HSS.IC.B.3

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.IC.B.6

The student council at a local high school is collecting data to determine the top ten favorite songs of the students in the school. Which of the following methods represents stratified sampling?

• interview every second student who arrives at school Monday morning

• randomly interview 10% of students from each grade

• survey all the students in grade 9

• invite students to fill in a survey and return it

Tags

CCSS.HSS.IC.B.3

Which type of study is best to use to determine the average speed of a 777 Jetliner?

• Observational Study

• Sample Survey

• Experiment

• Random Sample

Tags

CCSS.HSS.IC.B.3

Which type of study is best to use to determine the favorite TV show on a Monday night?

• Sample Survey

• Experiment

• Observational Study

• Margin of Error

Tags

CCSS.HSS.IC.B.3

To collect data about the kinds of pets people own, Rebecca interviews everyone who brings their pet to a local Animal Hospital. What type of sample does this represent?

• Simple Random Sample

• Stratified Random Sample

• Convenience Sample

• Cluster Random Sample

Tags

CCSS.HSS.IC.B.3

Monkeys with Monkey Pox are randomly divided into 2 groups. One group is given a 500-mg. dose of the new drug that is believed to contain the Monkey Pox virus, and the other group is given a 100-mg dose of the new drug. After 6 months, the results of the two groups are compared. What type of study is described?

• Experiment

• Sample Survey

• Observational Study

• Questionnaire

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5