The following data represent trunk circumferences (in mm) for a random sample of 60 4-year-old apple trees at East Mailing Agriculture Research Station in England (Reference: S. C. Pearce, University of Kent at Canterbury). Note: These data are also available for download at the Companion sites for this text.

(a) Make a stem and leaf display of the tree circumference data.
(b) Make a frequency table with seven classes showing class limits, class boundaries, midpoints, frequencies, and relative frequencies.
(c) Draw a histogram.
(d) Draw a relative-frequency histogram.
(e) Identify the shape of the distribution.
(f) Draw an ogive.
(g) How are the low frequencies shown in the histogram reflected in the steepness of the lines in the ogive?

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