3. Two-Way Tables
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We want to compare the percentage of the brown-haired students with blue eyes and the percentage of the red-haired students with brown eyes. To do so, we will first identify the number of brown-haired students with blue eyes, the number of red-haired students with brown eyes, and the grand total in the given two-way table. Let's do it!
Hair Color | ||||||
Black | Brown | Red | Blond | Total | ||
Eye Color | ||||||
Brown | 7 | 12 | 3 | 1 | 23 | |
Blue | 2 | 8 | 2 | 9 | 21 | |
Hazel | 2 | 5 | 1 | 1 | 9 | |
Green | 1 | 3 | 1 | 2 | 7 | |
Total | 12 | 28 | 7 | 13 | 60 |
We know that 13% is greater than 5%. This means that the percentage of red-haired students with brown eyes is greater than the percentage of brown-haired students with blue eyes.