Stats Test Review 25

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 50 blocks and survey all households on each selected block. 
This is an example of:

• Simple Random Sample
• Stratified Random Sample
• Cluster Random Sample
• Systematic Random Sampling

The manager at Paneras surveys every tenth person leaving the restaurant. Only 12 out of the 40 people asked respond to the survey. This is an example of:

• Response bias

• Undercoverage

• Cluster sample

• Nonresponse

Assign each car in a dealership a number and then use a random number generator to select the cars to be inspected.

• systematic

• simple random sample

• convenience

• voluntary response

Is fish good for the gut? Researchers tracked 22,000 male physicians for 22 years. Those who reported eating seafood of any kind at least 5 times per week had a 40% lower risk of colon cancer than those who said they ate seafood less than once a week. This is an example of

• an observational study, and the response variable was rate of colon cancer.

• an observational study, and the response variable was seafood consumption.

• an experiment, and the response variable was rate of colon cancer.

• an experiment, and the response variable was seafood consumption.

Identify the sampling method used in this situation. 

Select three JV and three Varsity basketball players to receive ice cream by putting the JV names in one hat and all the Varsity names in a different hat and picking out three names from each hat. 

• Simple Random

• Systematic

• Stratified

• Cluster

It is a subgroup of population

• data

• variable

• population

• sample

What do you mean the term SRS?

• Sample random sampling

• Simple random sampling

• Stratified random sampling

• None of the above

if Kent Lester conducted a research in PCF, he collected the data through listing all students. In every 4rth term on his list, he will interview that student, what methods he used?

• random sampling

• systematic sampling

• stratified sampling

• cluster sampling

A researcher randomly assigned boys and girls to each of two groups. One group was assigned to watch a violent television program while the other group watched a nonviolent program. The children's behavior was then recorded for incidences of aggressive behavior. This research method is best characterized as...

• experimental

• Observation

Researchers wanted to know if there is a link between proximity to high-tension wires and the rate of leukemia in children. To conduct the study, researchers compared the rate of leukemia for children who lived within 1/2 mile of high-tension wires to the rate of leukemia for children who did not live within 1/2 mile of high-tension wires.

• Observational Study

• Experiment