Answer
$47.89 \ cm$
Work Step by Step
The mean is given by
$$
\frac{1}{4}\left(
47.61 \ cm+ 48.23\ cm+ 47.92\ cm+ 47.81\ cm
\right)
\\=47.89 \ cm
$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 15 - Section 15.5 - Mean Measurement - Exercise - Page 515: 11
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