(c) Construct a stem-and-leaf display of the data. (d) Compute the 10% trimmed mean. Compare with the results in (a) and (b) and comment.
(c) Construct a stem-and-leaf display of the data. (d) Compute the 10% trimmed mean. Compare with the results in (a) and (b) and comment.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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Question
Answer c and d only. Please explain the results.
Transcribed Image Text:The following are historical data on staff salaries
(dollars per pupil) for 30 schools sampled in the eastern
part of the United States in the early 1970s.
3.79 2.99 2.77 2.91 3.10 1.84 2.52 3.22
2.45 2.14 2.67 2.52 2.71 2.75 3.57 3.85
3.36 2.05 2.89 2.83 3.13 2.44 2.10 3.71
3.14 3.54 2.37 2.68 3.51 3.37
(a) Compute the sample mean and sample standard
deviation.
(b) Construct a relative frequency histogram of the
data.
(c) Construct a stem-and-leaf display of the data.
(d) Compute the 10% trimmed mean. Compare with
the results in (a) and (b) and comment.
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