Designing a Study

Question 1

What type of sampling method is used? cluster✔ systematicsimple randomconveniencestratified

Revolt · Accepted Answer

B: ✔ systematic

Question 2

A company redesigned its website. It wants to collect data to see if it is user friendly. Which would be the best way to collect the data?experimentsimulationobservational studycensus✔ sample survey

Revolt · Accepted Answer

E: ✔ sample survey

Question 3

What is the population?

Revolt · Accepted Answer

A: all the households in given state

Question 4

What type of sampling method is used?stratified sample✔ simple random samplecluster sampleconvenience sample

Revolt · Accepted Answer

B: ✔ simple random sample

Question 5

What type of sampling is used?

Revolt · Accepted Answer

D: stratified

Question 6

Which of these methods is most likely to be biased?

Revolt · Accepted Answer

E: convenience

Question 7

Select all sampling methods used.

Revolt · Accepted Answer

B: convenience; E: systematic; F: voluntary

Question 8

Why might the method used be biased?

Revolt · Accepted Answer

B: It is likely that student opinions in one particular high school do not accurately represent the opinions of all high school students.; C: Students that take the time to complete the survey and mail it in probably feel strongly about hot lunches.

Question 9

Identify the sampling method used, and explain why this sample could be biased.

Revolt · Accepted Answer

The sampling method used is convenience sampling. The sample could be biased because it only includes listeners of that specific radio station at a particular time. Additionally, results might be skewed because people who choose to call into a radio station often have strong opinions about the topic being discussed.

Question 10

What is the sample?

Revolt · Accepted Answer

B: 1565 households surveyed

Designing a Study Answers

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