Dutch elm disease is spread by bark beetles that breed in the diseased wood. A sample of 100 infected elms was obtained, and the number of bark beetles on each tree was counted. The data are summarized in the following table:

(a) Graph a histogram for the bark beetle data.

(b) Graph a cumulative frequency polygon of the bark beetle data. Show the median and quartiles on your cumulative frequency polygon.

Transcribed Image Text:

Boundaries Frequency 0 < x 50 8 50 < x 100 24 100 < x 150 33 150x 200 21 200 < x 400 14