AP Stats Designing a Study

_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.

• Sample
• Population
• Random Sample
• Quartile

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CCSS.HSS.IC.B.3

CCSS.HSS.IC.A.1

A student surveys mathematics teachers to get their opinion on teaching.  What is the sample?

• All teachers in the world.
• All teachers within the school.
• All mathematics  teachers in the school.
• All teachers except mathematics teachers.

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CCSS.HSS.IC.B.3

CCSS.HSS.IC.A.1

Kim surveys 100 moviegoers that entered the movie theater in the first hour.  What type of sampling method is this?

• Random
• Convenience
• Biased

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CCSS.HSS.IC.B.3

CCSS.HSS.IC.A.1

A teacher decides to survey the students in her classes to find out their opinion on the new menu in the cafeteria.  Is this biased or unbiased?

• Biased
• Unbiased

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CCSS.HSS.IC.B.3

CCSS.HSS.IC.A.1

A school randomly chose ten English teachers and asked them which type of juice their students would prefer. Which reason best shows why this sample is biased?

• The sample didn't include students.
• The sample is too small.
• The sample can only be accurate if each teacher is included in the sample

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CCSS.HSS.IC.B.3

CCSS.HSS.IC.A.1

a controlled study in which the researcher attempts to understand cause-and-effect relationships by assigning subjects to groups and deciding which treatments each group receives

• survey

• observational study

• experiment

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CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

You want to see if students who have a 4.0 grade point average study more than those who do not.

• survey

• observational study

• experiment

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CCSS.HSS.IC.A.1

CCSS.HSS.ID.A.2

CCSS.HSS.IC.B.4

A large company wants to conduct a survey to determine the proportion of its male employees who practice yoga on a daily basis. Two of its regional offices are chosen at random and all of the male employees at each office are surveyed. The plan is an example of which type of sampling?

• Cluster

• Convenience

• Simple random

• Stratified random

• Systematic

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CCSS.HSS.IC.B.3

Which of the following is a key distinction between well designed experiments and observational studies?

• More subjects are available for experiments than for observational studies.

• Ethical constraints prevent large-scale observational studies.

• Experiments are less costly to conduct than observational studies.

• An experiment can show a direct cause-and-effect relationship, whereas an observational study cannot.

• Tests of significance cannot be used on data collected from an observational study.

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CCSS.HSS.IC.B.3

CCSS.HSS.ID.C.9

A local TV station is interested in how citizens in a small town feel about the increased sales tax proposed by the city council. The question "Are you in favor of the proposed sales tax increase that will be used to improve the sidewalks and streets in downtown?" was shown on the screen during the evening news broadcast and viewers were instructed to text their answer to the number given on the screen. This survey method could produce biased results for all of the following reasons except:

• The wording of the question is biased.

• A person could answer the survey multiple times.

• It uses a stratified sample rather than a simple random sample.

• the survey excludes voters who do not watch the evening news cast.

• People who feel strongly about the issue are more likely to respond.

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CCSS.HSS.IC.B.3

CCSS.HSS.IC.A.1