Question

populations, samples and hypothesis
this quiz will test your knowledge on populations, samples and hypothesis.
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value: 3
which of the following data collection methods best describes the situation below?
a polling company wants to predict which candidate will win an election. company employees randomly call 1482 likely voters and ask them how they plan to vote.
a. correlation
b. experiment
c. sample survey
d. observational study

Explanation:

A sample survey involves selecting a subset (sample) of a population and collecting data from them. Here, the polling company selects 1482 likely voters (a sample) and asks for their voting - intention data. It's not a correlation (which measures relationships between variables), not an experiment (which involves manipulating variables), and not an observational study (which just observes without direct interaction like asking questions).

Answer:

C. sample survey