Statistical Studies: Designing a Study (Quiz) ~amdm

Researchers periodically survey a few thousand of the patients taking a certain medication in order to make connections between that medication and the subjects' general health. This method of gathering data is classified as a census. a sample survey. an experiment. an observational study.

an observational study

Which method of gathering data will be most effective in learning how diet and fitness choices affect long-term health? an experiment an observational study a sample survey a census

an observational study

The population of a town is divided into three age categories. A random sample of each category is surveyed about voting choices. This type of sampling is called cluster sampling. stratified sampling. simple random sampling. systematic random sampling.

Not cluster sampling

Pollsters take a survey of people at a ball game to collect and analyze data about favorite leisure activities of Star City's residents. Would this study be biased Why or why not? No, it is not biased. The sample of people at the ball park is representative of Star City's residents. No, it is not biased. All people at the ball park will respond to the survey. Yes, it is biased. Not all people at the ball park will respond to the survey. Yes, it is biased. The sample of people at the ball park is not representative of Star City's residents.

Yes, it is biased. The sample of people at the ball park is not representative of Star City's residents.

A market research company wants to collect opinions on the comfort and performance of a new type of sneaker by Brand X. Which group of individuals would be the best choice for a random sample? ask every fourth person on the street ask every fourth person who is wearing that brand of sneaker ask every fourth employee from the Brand X flagship store ask every fourth person who is wearing shoes

ask every fourth person who is wearing that brand of sneaker

A professor surveys his students about their opinions on how well he taught the course. He puts this survey on the last page of his final exam. Which type of bias will most likely have the strongest effect on the survey results? lack of access response bias wording bias undercoverage

response bias

A teacher asks students to list the math lessons they learned on nine random school days in the past month. She evaluates the students' performance on this assignment to get a general picture of how well students are taking notes. This teacher's method is an example of systematic random sampling. simple random sampling. convenience sampling. stratified sampling.

simple random sampling

Researchers are conducting a survey about what brand of ice cream shoppers prefer. They survey the tenth person who walks into the store and then every fifth person after that. This type of sampling is called random sampling. stratified sampling. systematic random sampling. cluster sampling.

systematic random sampling

Brand Y Cola sponsors a survey of 15,559 residents of Texas to determine which brand of cola they prefer. Forty percent say they prefer Brand X, and 60 percent say they prefer Brand Y. Which of the following is the population sample? the residents of Texas the 15,559 residents the 40 percent who prefer Brand X Cola the 60 percent who prefer Brand Y Cola

the 15,559 residents

At the beginning of a call to the cable company, a message tells customers, "After you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you received. It would be appreciated if you could please stay on the line to answer the survey questions." What type of sampling is the cable company using? systematic random sampling voluntary sampling cluster sampling convenience sampling

voluntary sampling