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

Internet polls are considered more credible than those that use random digit dialing, because Internet polls typically rely on a more advanced method of random sampling.TrueFalse

Two national polling companies are interested in measuring the support of the Democratic frontrunners for the governor of California. Polling company A uses random-digit-dialing (RDD) to contact 1,000 Californians. A live interviewer asks respondents "Which candidate do you support?" The results of the poll are as follows:Tom Jones: 34% Abigail Lee: 51%Neither: 15%Margin of Error +/2%On the same day, polling company B uses random-digit-dialing to conduct a robo-poll of 1,500 Californians. A prerecorded electronic voice asks respondents "Which candidate do you prefer?" The results of the poll are as follows:Tom Jones: 32% Abigail Lee: 30%Neither: 38%Margin of Error +/-2.5%Which of the following most likely accounts for the difference in the poll results?a.)Poll B has a higher margin of error than Poll A, so it is much less reliable.b.)Both polls use random-digit-dialing, so it's unlikely that either group is representative of the whole population of California.c.)Poll A may be skewed by social desirability bias, as respondents may have been unwilling to report that they did not support either candidate.d.)Poll B uses a leading question that may influence responses, whereas Poll A does not.

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

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

A political party wants to know the reaction of voters to a debate between the candidates. The day after the debate, the party's polling staff calls 1,200 randomly selected phone numbers. If a registered voter answers the phone or is available to come to the phone, that registered voter is asked whom he or she intends to vote for and whether the debate changed his or her opinion of the candidates.clustersimple random    conveniencestratifiedsystematic