At a certain driver\'s license testing station only 40% of all new drivers pass

Question

At a certain driver's license testing station only 40% of all new drivers pass the behind-the-wheel test the first time they take it. A sample of 50 new drivers from a certain high school found that 18 of them had passed the test the first time. Which of these numbers is a statistic?

At a certain driver's license testing station only 40% of all new drivers pass the behind-the-wheel test the first time they take it. A sample of 50 new drivers from a certain high school found that 36% of them had passed the test the first time. Which of these numbers is a statistic? Which of these numbers is a parameter?

Explanation / Answer

Statistic describes a sample of the population.

Thus, the statistic is the 18 new drivers who had passed the test the first time among 50 new drivers.

A paameter is a measure that describes the entire population. Thus the parameter is 40% of all new drivers pass the behind-the-wheel test the first time they take it.

The statistic is 36% of 50=18 new drivers who had passed the test the first time.

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