2.25 Blossom widths A data set (available at the book’s website) analyzed by the famous statistician R. A. Fisher consisted of measurements of different varieties of iris blossoms. Histograms representing the widths of the petals of the two species, Iris setosa and Iris versicolor, are on the shown below.

a. Describe the shape of the distribution of setosa petal widths.

b. Describe the shape of the distribution of versicolor petal widths.

c. Of the 50 versicolor blossoms in the data set, approximately what percentage has a petal width less than 3.2 inches?

d. Is it possible to determine accurately the percentage of versicolor blossoms with a width of more than 3 inches?
Why or why not?

Transcribed Image Text:

25- 20 15 10 5- 0 25 20 15 10 Frequency 50 setosa versicolor 2 2.4 2.8 3.2 3.6 4 4.4 Petal Width (inches)