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Representing Two Categorical Variables

AP Statistics· difficulty 3/5

The table shows smoking status for two regions.

Smoking by region Region Smoker Non Total North 60 240 300 South 90 210 300 Total 150 450 600

Comparing the conditional proportions of smokers, what do you conclude?

  • A

    Cannot be compared

  • B

    The North has a higher rate

  • C

    The two regions have equal smoking rates

  • D

    The South has a higher proportion of smokers (0.30 vs 0.20)

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Explanation

Smoker rates: North 60/300 = 0.20; South 90/300 = 0.30. South is higher.

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