5. Use the following information to match sampling methods and types bias. For e

Question

5. Use the following information to match sampling methods and types bias.  

For each strategy list the sampling method ( Choices: Convenience sampling, Stratified sampling, Simple random sampling, Systematic sampling, Cluster sampling). Then, select the type of bias you would expect with that sampling method (check all that apply, choices are No bias in this survey, Undercoverage bias, Nonresponse bias, Response bias due to social desirability, issues, Self-selection bias, Response bias due to leading questions).

A statistics student who is curious about the relationship between the amount of time students spend on social networking sites and their performance at school decides to conduct a survey. Four research strategies for collecting data are described below. In each, name the sampling method proposed and any bias you might expect.

Strategy 1: He randomly samples 40 students from the study's population, gives them the survey, asks them to fill it out and bring it back the next day.

Strategy 2: He gives out the survey only to his friends, and makes sure each one of them fills out the survey.

Strategy 3: He posts a link to an online survey on his Facebook wall and asks his friends to fill out the survey.

Strategy 4: He stands outside the student center and asks every third person that walks out the door to fill out the survey.

Explanation / Answer

Strategy 1: He randomly samples 40 students from the study's population, gives them the survey, asks them to fill it out and bring it back the next day - Simple random sampling, Nonresponse bias

Strategy 2: He gives out the survey only to his friends, and makes sure each one of them fills out the survey - Convenience sampling, Undercoverage bias

Strategy 3: He posts a link to an online survey on his Facebook wall and asks his friends to fill out the survey - Convenience sampling, Undercoverage bias, Response bias due to social desirability

Strategy 4: He stands outside the student center and asks every third person that walks out the door to fill out the survey - Systematic sampling, No bias in this survey

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