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1) The Director of Food Operations at a small college campus wants to determine student concerns about cafeteria

food. Select the sample most likely to produce biased data.

A.

A randomly selected group of 30 students entering the dining hall before dinner.

B.

A randomly selected group of 30 students leaving the dining hall after a Friday dinner.

C.

A randomly selected group of 30 registered students.

D.

A randomly selected group of 30 students who have signed food contracts.


2) Determine whether a census is practical in the situation described. Explain your reasoning.

An accountant wants to determine the mean salary of all biology instructors at the State University.


A. A census is not practical. The number of biology instructors at the State University is too large and it would probably be difficult to obtain their salaries because of privacy issues.


B. A census is practical. The number of biology instructors at the State University is not very large and it would probably be easy to obtain their salaries through a survey that promised anonymity.


3)Determine the evaluation guideline that applies best in questioning the results of the described study.

A teacher wanted to know the attitudes of faculty on early dismissal for Homecoming. She randomly selected 20 of the 114 faculty and asked them to circle​ "agree" or​ "disagree" on the form as​ follows: "Agree/Disagree: Valuable learning time should not be sacrificed for extracurricular social​ activities."

A.

Consider the wording of any survey.

B.

Consider the sampling method.

C.

Consider the form of response.

D.

Consider the type of study.

Top Answer

1) While all options have some risk of bias pending what the survey wants to get, I would say B has the highest risk of bias.... View the full answer

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