The frequency distribution of the length of a sample of 98 nails is presented in Table 2.11
Question:
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.
Transcribed Image Text:
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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Lets begin by calculating the mean length of the sample To find the mean length of this sample we should find the midpoint of each class interval multiply it by the frequency of that class add all the...View the full answer
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