Zander wants to find out what the most popular sporting event is in the district’s high schools. He surveys a sample of the population. Under which condition is surveying a sample valid?

Surveying a sample is useful when the population is large or diverse, because asking every person would be difficult. The sample should represent the different people in the district’s high schools so the results can reflect the population. Therefore, the correct choice is “The population contains a large diverse group of people.”

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