The British statistician Ronald Fisher introduced a famous data set called Fisher’s Iris data set. This data set describes various physical characteristics, such as petal length and petal width (in millimeters), for three species of iris. In the scatter plot shown, the petal lengths form the first data set and the petal widths form the second data set. As the petal length increases, what tends to happen to the petal width?

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25- Petal width (in millimeters) 20 20 15- 10- in Fisher's Iris Data Set 10 20 30 40 50 60 70 170 Petal length (in millimeters)