Unit 3 Quiz Review

Multiple Choice

Interview every 10th student who enters the school in the morning.

• simple random

• voluntary response

• systematic

• convenience

Multiple Choice

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.

Multiple Choice

A ___ is a small portion of the population used to gather data from.

• Systematic Sampling Method
• Sample
• Population
• Bias

Multiple Choice

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 1 block and survey all households on that block.

This is an example of:

• Simple Random Sample

• Stratified Random Sample

• Cluster Random Sample

• Systematic Random Sampling

Multiple Choice

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.

She selects the five closest to her desk.

• Simple Random

• Volunteer Response

• Convenience

• Systematic Random

Multiple Choice

Every possible group of units of the required size has the same chance of being the selected sample as any other sample of the same size.

• Simple Random 
• Thoughtful
• Typical
• Proportional

Multiple Choice

Identify the sampling design: Student government randomly samples 25 students of each of the four grade levels.

• stratified
• volunteer
• systematic
• simple random

Multiple Choice

Identify the sampling design: Mr. Rhoades puts all of his students' names in a hat and randomly selects one without looking.

• cluster
• volunteer
• systematic
• simple random

Multiple Choice

Identify the sampling design: School admin conducted a survey on post-graduation plans.  Students of senior class 2018 were listed in order by class rank.  The school selected a random number between 1 and 15, obtaining a number 11.  Then, they selected every 11th student for the survey.

• cluster
• volunteer
• systematic
• simple random

Multiple Choice

A survey consisted of a random sample of 3800 U.S. adults. The adults were asked, "Should we have a third major political party in this country in addition to the Democratic and Republican parties?" In this sample, 53% responded, “Yes, we should have a third major political party.” What is the population to which these results can be generalized?

• all registered voters

• all adult residents of the U.S.

• the 3,800 people who were interviewed

• all people who think we should have a third political party

Multiple Choice

A school board members send a survey card to all registered voters in her district asking them to call a number to state whether or not they recognize her name. What type of bias is involved?

• Undercoverage

• Nonresponse

• Response bias

• There is no bias

Multiple Choice

We say that the design of a study is biased if

• the sample isn’t perfectly representative of the population.

• you get a sample result that differs from the true value.

• it systematically favors certain outcomes over others.

• the correlation is greater than 1 or less than –1.

Multiple Choice

Volunteers for a politician's campaign called 100 randomly selected citizens to conduct a survey. Only 50 people agreed to answer the survey questions, and most of them were supporters of the candidate. This is an example of...

• Response Bias

• Nonresponse Bias

• Undercoverage Bias

Multiple Choice

Source of bias in which some groups of populations are LEFT OUT of the selection process

• Response Bias
• Undercoverage
• Convenience Sampling
• Voluntary Response

Multiple Choice

Many websites like Amazon and Yelp include customer ratings and reviews of products, restaurants, hotels, and so on. What is the predominant bias evident in these ratings and reviews?

• Response Bias

• Non-Response Bias

• Undercoverage Bias

• Voluntary Response Bias

Multiple Choice

16 out of the 20 people who called into a radio station said that they enjoy the station's morning programming. What type of bias is demonstrated here?

• Voluntary Response Bias

• Nonresponse Bias

• Undercoverage Bias

Multiple Choice

Define causation:

• When one variable causes another to change indirectly

• When one variable causes another to change directly

• the relationship between a set of data

• something that is unknown

Multiple Choice

This sample consists of the entire population

• convenience
• census
• cluster
• simple

Multiple Choice

Source of bias in which people CHOOSE to respond and usually only people with very strong opinions respond.

• Voluntary Response Bias

• Undercoverage Bias

• Leading Question Bias

• Social Desirability Bias

• Non Response Bias

Multiple Choice

Marianne wanted to know students' opinion on the new schedule at school. She survey's the first 30 students who come into her class.

• Convenience Sampling

• Systematic Random Sampling

• Simple Random Sampling

• Volunteer response

Multiple Choice

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:

• Simple Random Sample
• Stratified Random Sample
• Voluntary Response
• Systematic Random Sampling

Multiple Choice

I want to estimate the proportion of all adults in Chittenango who have gotten a speeding ticket. I select a random sample of addresses and go to those houses. When an adult answers the door, I ask if they have ever gotten a speeding ticket. If a child answers the door, I ask for an adult. If there is none there at the time, I return at another time to complete the survey. What is the most prominent bias?

• Non-response bias

• Response bias

• Voluntary response bias

• Undercoverage

Multiple Choice

A ___ is a large group that includes everything being studied.

• Sample
• Stratified Sampling Method
• Population
• Voluntary-Response

Multiple Choice

A teacher splits her classes up by period. She then randomly picks 3 students from each period to do a survey.

• Stratified.

• Systematic

• Cluster

• Biased.