A professor surveys his students about their opinions on how well he taught the course. He puts this survey on the last page of his final exam. Which type of bias will most likely have the strongest effect on the survey results?

Students may not truthfully reply because they fear it will affect their grade.

Not all students will have the access needed to find the survey.

Students may not understand the wording used in the survey.

Not all students will be represented in the survey sample.

Political pollsters now make sure to conduct a percentage of their telephone interviews by calling mobile phones. This policy best addresses which potential source of bias?

Some of the population may not have access to other types of phones.

The survey only reaches individuals who volunteer to be interviewed.

The policy helps individuals understanding the wording of survey questions.

Some individuals contacted may choose to not participate.

A market research company wants to collect opinions on the comfort and performance of a new type of sneaker by Brand X. Which group of individuals would be the best choice for a random sample?

ask every fourth person who is wearing that brand of sneaker

ask every fourth person on the street

ask every fourth employee from the Brand X flagship store

ask every fourth person who is wearing shoes

Pollsters take a survey of people at a ball game to collect and analyze data about favorite leisure activities of Star City’s residents. Would this study be biased? Why or why not?

Yes, it is biased. The sample of people at the ball park is not representative of Star City’s residents.

No, it is not biased. The sample of people at the ball park is representative of Star City’s residents.

No, it is not biased. All people at the ball park will respond to the survey.

Yes, it is biased. Not all people at the ball park will respond to the survey.

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

All mathematics teachers in the school.

All teachers within the school.

All teachers except mathematics teachers.

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 can only be accurate if each teacher is included in the sample

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

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

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.

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

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 :

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

The wording of the question is biased.

A person could answer the survey multiple times.

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

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

Which of the following is not a way to choose a random sample of 25?

Assemble possible participants in a circle around a person who is blindfolded, spin the person around 3 times and have them point at a person. Do this 25 times.

Assign numbers. Use a random number generator to choose 25

Put names in a hat, mix them up and choose 25

Statistics - Designing a Study June 9th

Authored by Robert Altenhof

Mathematics

10th - 12th Grade

CCSS covered

Used 4+ times

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29 questions

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MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which of the following could be classified as a census?

a survey of a percentage of each state’s population about voting choices

a survey of each student in a school about school lunch options

a survey of all the children in a supermarket to determine the favorite cereal brands of the general population

a survey of all the women on Main Street to determine the current movie preferences of all people over age 20

Tags

CCSS.HSS.IC.A.1

CCSS.7.SP.A.1

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Researchers periodically reviewed the medical records of a few thousand of the patients taking a certain medication in order to make connections between that medication and these subjects’ general health. This method of gathering data is classified as

a census.

a sample survey.

an experiment.

an observational study.

Tags

CCSS.HSS.IC.B.3

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Researchers call random radio listeners on the phone to rank five different popular songs. This research helps radio stations decide which songs to play more often. This method of gathering data is classified as

a census.

a sample survey.

an experiment.

an observational study.

Tags

CCSS.HSS.IC.B.3

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Brand Y Cola sponsors a survey of 15,559 residents of Texas to determine which brand of cola they prefer. Forty percent say they prefer Brand X, and 60 percent say they prefer Brand Y. Which of the following is the sample used for the survey ?

the residents of Texas

the 15,559 residents

the 40 percent who prefer Brand X Cola

the 60 percent who prefer Brand Y Cola

Tags

CCSS.HSS.IC.A.1

CCSS.7.SP.A.1

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A small company wants to learn about the exact number of its employees who visit the dentist for regular checkups. Which type of study will best help the company discover this information?

census

survey sample

observational study

experiment

Tags

CCSS.HSS.IC.B.3

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A random number generator is used to model the patterns of animals in the wild. This type of study is called

a survey.

a random sample.

an experiment.

a simulation.

Tags

CCSS.7.SP.C.8C

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The population of a town is divided into three age categories. A random sample of each category is surveyed about voting choices. This type of sampling is called

cluster sampling.

stratified sampling.

simple random sampling.

systematic random sampling.

Tags

CCSS.HSS.IC.B.3

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Statistics - Designing a Study June 9th

Which of the following could be classified as a census?

Researchers periodically reviewed the medical records of a few thousand of the patients taking a certain medication in order to make connections between that medication and these subjects’ general health. This method of gathering data is classified as

Researchers call random radio listeners on the phone to rank five different popular songs. This research helps radio stations decide which songs to play more often. This method of gathering data is classified as

Brand Y Cola sponsors a survey of 15,559 residents of Texas to determine which brand of cola they prefer. Forty percent say they prefer Brand X, and 60 percent say they prefer Brand Y. Which of the following is the sample used for the survey ?

A small company wants to learn about the exact number of its employees who visit the dentist for regular checkups. Which type of study will best help the company discover this information?

A random number generator is used to model the patterns of animals in the wild. This type of study is called

The population of a town is divided into three age categories. A random sample of each category is surveyed about voting choices. This type of sampling is called

Researchers are conducting a survey about what brand of ice cream shoppers prefer. They survey the tenth person who walks into the store and then every fifth person after that. This type of sampling is called

News cameras take an overhead picture of a part of a crowd at an outdoor event. Journalists then count the number of people in the picture and use the sample to estimate the total number of people in the crowd. This process is an example of

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