Questions and Answers
What type of study will best help a company discover the number of its employees who visit the dentist for regular checkups?
census
What method of gathering data will be most effective in learning how diet and fitness choices affect long-term health?
an observational study
Which group of individuals would be the best choice for a random sample for a market research company collecting opinions on a new sneaker?
ask every fourth person who is wearing that brand of sneaker
What type of sampling is the cable company using when they ask customers to stay on the line for a survey after a call?
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Which of the following could be classified as a census?
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What is the classification of the research method when researchers call random radio listeners to rank songs?
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What potential source of bias do political pollsters address by conducting interviews via mobile phones?
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Which type of bias will likely have the strongest effect on a professor's survey about his teaching?
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In a survey sponsored by Brand Y Cola, what is the population sample among the respondents?
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What is the process called when news cameras take an overhead picture of a crowd to estimate the total number?
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Study Notes
Employee Dentist Visits
- A census is the best study type to determine the number of employees visiting the dentist for checkups, as it involves surveying the entire group.
Health Study Methods
- An observational study effectively gathers data on how diet and fitness affect long-term health by monitoring individuals without intervention.
Market Research Sampling
- For a random sample of opinions on a sneaker's comfort and performance, selecting every fourth person wearing Brand X is a practical choice.
Customer Service Surveys
- The cable company uses voluntary sampling by encouraging customers to complete a survey after interacting with a representative.
School Lunch Options Survey
- A survey of all students regarding school lunch options exemplifies a census, as all individuals in the population are included.
Radio Song Rankings
- Researchers conducting phone calls to random radio listeners to rank songs are utilizing a sample survey as their data collection method.
Mobile Phone Polling Bias
- Conducting interviews via mobile phones addresses the potential bias of lack of access, ensuring broader demographic representation in political polling.
Course Feedback Bias
- A professor's survey placed at the end of the final exam is likely to suffer from response bias, affecting the honesty and accuracy of student feedback.
Cola Preference Survey
- The population sample in Brand Y Cola's survey consists of the 15,559 Texas residents who participated in the cola preference study.
Estimating Crowds with Sampling
- Taking an overhead photo of a crowd and estimating totals through counting exemplifies cluster sampling, focusing on a specific segment of the population.
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Description
Test your knowledge on different types of study methods and designs, including census and observational studies. This quiz will help you understand how various approaches are used to gather data effectively in research. Perfect for students learning about data collection methods.
