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

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 dials numbers consecutively, thereby reaching the maximum number of respondents.Because it ensures that every member of the population has an equal chance of being selected.Because it only calls landlines, therefore reaching a certain demographic.Because it targets specific demographic groups, thus ensuring the poll results reflect their opinions accurately.

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.

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 FiveThirtyEight's "13 Tips for Reading General Election Polls Like a Pro," news coverage of election polling is more reliable when it

There are all sorts of polls including tracking polls, push polls, straw polls, and exit polls.  How are these different types of polls used, and what should one look at to determine whether or not they are accurate?