Sampling Methods and Bias

A ______ sample is obtained by dividing the population into groups and selecting all individuals from within a random sample of the groups

• Stratified

• Cluster

• Systematic

• Convenience

A _______ sample is obtained by selecting every kth individual from the population

A _______ sample is obtained by dividing the population into homogenous groups and randomly selecting individuals from each group

• Cluster

• Stratified

• Systematic

• Convenience

Which type of sampling method is the least reliable?

• Cluster

• Stratified

• Systematic

• Convenience

________ bias is when the technique used to obtain the sample's individuals tends to favor one part of the population over another

• Sampling

• Nonresponse

• Response

• This is not bias

_________ bias is when individuals selected to be in the sample who do not respond to the survey have different opinions from those who do

• Sampling

• Nonresponse

• Response

• This is not bias

________ bias exists when answers on a survey do not reflect the true feelings of respondent

• Response

• Nonresponse

• Sampling

• This is not bias

A retail store manager wants to conduct a study regarding the shopping habits of his customers. He selects the first 60 customers who enter his store on a Saturday morning. What type of bias is this?

• Response

• Nonresponse

• Sampling

• This study was conducted appropriately, and there is no bias

A polling organization mails a questionnaire to 1023 randomly selected households throughout the United States and asks if a foreign language is the primary language spoken in the home. Of the 1023 households selected, 12 responded. What type of bias is this?

• Response

• Nonresponse

• Sampling

• This study was conducted appropriately, and there is no bias

A magazine company conducts a survey and randomly selects 400 women whose husbands were unfaithful and asks, "Do you believe a marriage can survive when the husband destroys the trust that must exist between husband and wife?"

• Response

• Nonresponse

• Sampling

• This survey is conducted appropriately, and there is no bias