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Exercise 22.4 1 The table gives information about the number of words in 40 sentences in a book. Number of words 1-5 6-10 11-15 16-20 Frequency 5 9 19 7 (a) State the modal class interval. (b) Find an estimate of the mean. (c) Draw a cumulative frequency graph to estimate the median, the lower and upper quartiles and the interquartile range.

Exercise 22.4 1 The table gives information about the number of words in 40 sentences in a book. Number of words 1-5 6-10 11-15 16-20 Frequency 5 9 19 7 (a) State the modal class interval. (b) Find an estimate of the mean. (c) Draw a cumulative frequency graph to estimate the median, the lower and upper quartiles and the interquartile range.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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22.4

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0 Exercise 22.4 1 The table gives information about the number of words in 40 sentences in a book. Number of words 1-5 6-10 11-15 16-20 Frequency 5 9 19 7 (a) State the modal class interval. (b) Find an estimate of the mean. (c) Draw a cumulative frequency graph to estimate the median, the lower and upper quartiles and the interquartile range. Hugh. Mathematics - A Complete Introduction: Teach Yourself, Hodder & Stoughton, 2013. ProQuest Ebook Central, http://ebookcentral.proquest.com/lib/arden/detail.action?docID=1719478. ed from arden on 2021-09-07 03:34:38. 2 The table gives information about the weights, in kilograms, of 100 men. Weight (w kg) 60 ≤w < 70 70 ≤w < 80 80 ≤w < 90 90 ≤w< 100 100 ≤w< 110 (a) State the modal class interval. (b) Find an estimate of the mean. Frequency 8 14 23 39 16 (c) From a cumulative frequency graph, estimate the median, the lower and upper quartiles and the interquartile range. (d) How many men weighed more than 76 kg?
Transcribed Image Text:0 Exercise 22.4 1 The table gives information about the number of words in 40 sentences in a book. Number of words 1-5 6-10 11-15 16-20 Frequency 5 9 19 7 (a) State the modal class interval. (b) Find an estimate of the mean. (c) Draw a cumulative frequency graph to estimate the median, the lower and upper quartiles and the interquartile range. Hugh. Mathematics - A Complete Introduction: Teach Yourself, Hodder & Stoughton, 2013. ProQuest Ebook Central, http://ebookcentral.proquest.com/lib/arden/detail.action?docID=1719478. ed from arden on 2021-09-07 03:34:38. 2 The table gives information about the weights, in kilograms, of 100 men. Weight (w kg) 60 ≤w < 70 70 ≤w < 80 80 ≤w < 90 90 ≤w< 100 100 ≤w< 110 (a) State the modal class interval. (b) Find an estimate of the mean. Frequency 8 14 23 39 16 (c) From a cumulative frequency graph, estimate the median, the lower and upper quartiles and the interquartile range. (d) How many men weighed more than 76 kg?
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