Gallup's polling approach ensures that each respondent in a survey has an equal probability of being selected for the sample, regardless of whether the contact was made via a landline or a cell phone.Group of answer choicesTrueFalse

The Pew Research Center, renowned for its public opinion polls, uses a technique known as random digit dialing for phone surveys. Why is this technique considered more accurate for gathering representative data? Group of answer choicesBecause it ensures that every member of the population has an equal chance of being selected.Because it targets specific demographic groups, thus ensuring the poll results reflect their opinions accurately.Because it only calls landlines, therefore reaching a certain demographic.Because it dials numbers consecutively, thereby reaching the maximum number of respondents

For validity and reliability purposes, which of the following is likely the least preferred method of conducting a poll?Group of answer choicesa news websiterandom-digit dialingfocus groupse-mailed surveys

According to this class/the notes, which of the following is TRUE about non-response bias?Group of answer choicesIt is mostly a concern when the surveys are shortIt is when people stop responding towards the end of the surveyIt is when there is a systematic difference between the people who responded to the survey and the people who didn'tIt is NOT a concern when using probability sampling

A support hotline asks callers to stay on the line after they have completed their call to respond to a short survey.What type of sample is this?Choose 1 answer:Choose 1 answer:(Choice A)   Simple random sampleASimple random sample(Choice B)   Stratified random sampleBStratified random sample(Choice C)   Cluster random sampleCCluster random sample(Choice D)   Systematic random sampleDSystematic random sample(Choice E)   None of the aboveENone of the above

The accuracy of a poll is usually expressed in terms ofGroup of answer choicesconfidence interval error.sampling error.selection bias error.probability error.none of the above.