A statistical study is one that .

A. attempts to capture a population's characteristics by making inferences from a sample's characteristics and testing resulting hypotheses
B. emphasizes a full contextual analysis of a few events or conditions and their interrelations
C. discovers answers to the questions who, what, when, where, or how much
D. attempts to reveal why or how one variable produces changes in another
E. provides repeated measures over an extended period of time

The correct option is (A).

Explanation:

A statistical study is a process of making inferences about the population using the sample data.

In a statistical study the researcher first conducts an experiment and compute certain  sample statistic. Then uses these sample statistics to derive conclusions about the population.

If the sample size is large enough then the sample statistics can be used to estimate the population parameter values.

Or using these sample statistic the researcher can apply a hypothesis test to determine whether the claim made about the population as a whole is true or not.

Thus, the correct option is (A).

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