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Example of Simple Random Sampling: Pollster
A classic application of simple random sampling can be seen when a pollster starts with a complete list of all registered voters in a city, which represents the entire population. The pollster then randomly selects individuals from that list to form the sample and asks them whom they intend to vote for, ensuring each voter had an equal chance of being chosen.
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Research Methods in Psychology - 4th American Edition @ KPU
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Example of Simple Random Sampling: Pollster
Representative Sample
Why is simple random sampling often difficult or impossible to achieve in psychological research?
A psychology researcher wants to study stress levels among all undergraduate students at a large university. She posts a survey link on the university's social media page and collects responses from the first 200 students who volunteer to participate. This procedure qualifies as simple random sampling because any student at the university could have seen the post and chosen to respond.
A researcher wants to select a group of 50 participants from a university directory of 1,000 students using simple random sampling. Arrange the steps of this procedure in the correct chronological order.
To implement a sampling method where every member of a target group has an equal selection chance, a researcher must manage several distinct components. Match each component to the analytical role it plays in ensuring the method is executed correctly.
In simple random sampling, every individual member of the target population has an equal chance of being selected for the study.
A researcher defines their target population as 'all working parents in a city.' If the researcher only selects participants from a list provided by one specific daycare center, which aspect of simple random sampling is being violated?
When critiquing the methodology of a study claiming to use simple random sampling for 'all adults with depression in North America,' a researcher would conclude the claim is likely invalid. This judgment is based on the fact that without a complete sampling frame, it is impossible to ensure that every individual in that population has a(n) _____ chance of being selected.
A psychology instructor wants to demonstrate how sampling feasibility changes depending on how populations are defined and accessed. Match each research scenario or component to the corresponding practical characteristic of simple random sampling.
When analyzing the limitations of psychological research designs, a methodologist points out that simple random sampling is rarely achieved. This is because, unlike political polling where databases of registered voters are available, psychological populations are rarely defined _____ enough to give everyone an equal chance of selection.
A research team is evaluating a proposed study to determine if it successfully implements simple random sampling. Order the steps they should take to establish and evaluate the sampling process, starting from population definition to final evaluation.
Learn After
When a pollster uses simple random sampling to select a sample of 100 individuals from a complete list of all registered voters in a city, what is the defining characteristic of this selection process?
A pollster is conducting a study to determine voting intentions. Match each component of the pollster's selection process to the research role it fulfills.
A researcher acting as a pollster wants to use simple random sampling to estimate how many registered voters in a specific district support a new education policy. Arrange the following steps in the correct chronological order to implement this sampling method.
A pollster uses a random number generator to select 100 names from a complete, up-to-date list of all registered voters in a city. If the pollster only includes the 70 individuals who were willing to participate in the final data set, the procedure still ensures that every member of the population had an equal probability of being represented in the results.
In the pollster example of simple random sampling, what is the primary purpose of starting with a 'complete list of all registered voters' in the city?
A researcher evaluates a pollster's claim of using simple random sampling to survey voters. Upon review, the researcher finds that the pollster's selection program was twice as likely to select individuals with landline telephones than those with only cell phones. The researcher would judge this sampling method as a failure because it does not provide a(n) _____ chance of selection for every individual on the complete list of registered voters.
In the pollster example of simple random sampling, the entire population is defined as all _____ voters in a city.
A hospital administrator has a complete electronic roster of all 800 patients treated at a clinic during the past year. She uses a random number generator to select 60 patient IDs from that roster and then surveys those 60 patients about their care experience. This procedure is a valid application of simple random sampling.
A journalism student is auditing four alternative procedures a pollster could have used instead of textbook simple random sampling. Match each alternative procedure to the specific simple random sampling requirement it violates or satisfies.
A journalism student is auditing a pollster's claim that she used simple random sampling to survey 100 registered voters in a city. Arrange the following evaluative steps in the order that best supports a rigorous, logically sound verdict—from the most foundational check to the final judgment.