The frequency distribution of the length of a sample of 98 nails is presented in Table 2.11

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The frequency distribution of the length of a sample of 98 nails is presented in Table 2.11 (measured to the nearest 0.1 mm).

(a) Find the mean length of this sample by hand and by using a spreadsheet.

(b) Construct the cumulative frequency graph and use this to estimate the median.

(c) Check the value of the median using the formula method.

Length 4.0-42 4.3-4.5 4.6-4.8 4.9-5.1 5.2-5.4 5.5-5.7 Table 2.11 Frequency 4 9 13 20 34 18

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Business Statistics Using Excel

ISBN: 9780199659517

2nd Edition

Authors: Glyn Davis, Branko Pecar

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