## Related questions with answers

A utility company sends surveys to $200$ of its customers in such a way that $100$ surveys are sent to customers who pay their bills on time, $50$ surveys are sent to customers whose bills are less than $30$ days late, and $50$ surveys are sent to customers whose bills are more than $30$ days late. Which type of sample does this represent?

Solution

VerifiedStratified sampling is a sampling method that includes dividing the population into groups where they have the same characteristics, like gender. Then, they will pick samples from all of the groups to represent the population. Since the company grouped the customers depending on how they pay their bills then selected a sample from each group, the sampling method that they used is **stratified sampling**.

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