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1
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Which task is not a component of an observational study?
a) | The researcher decides who will make up the sample. | c) | The researcher gathers data from
the sample, using surveys or taking measurements. | b) | The researcher analyzes the data received from
the sample. | d) | The researcher
divides the sample into two groups, with one group acting as a control
group. |
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2
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A market research firm needs to collect data on viewer preferences for local
news programming in Buffalo. Which method of data collection is most appropriate?
a) | census | c) | observation | b) | survey | d) | controlled
experiment |
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3
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A doctor wants to test the effectiveness of a new drug on her patients.
She separates her sample of patients into two groups and administers the drug to only one of these
groups. She then compares the results. Which type of study best describes this
situation?
a) | census | c) | observation | b) | survey | d) | controlled
experiment |
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4
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A school cafeteria has five different lunch periods. The cafeteria staff
wants to find out which items on the menu are most popular, so they give every student in the first
lunch period a list of questions to answer in order to collect data to represent the school.
Which type of study does this represent?
a) | observation | c) | population survey | b) | controlled experiment | d) | sample survey |
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