Scatter plot: smokers (Full video)

Khan Academy

Supporting grades: 8

Description: Sal chooses the scatter plot that shows that smoking rate drops by 0.5 point each year. Created by Sal Khan. The percent of adults who smoke recorded every few years since 1967 suggests a negative linear association with no outliers. On average, the percent drops by 0.5 points each year. So let's see, this looks like a negative linear association.

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