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 Frequency 8 14 23 39 16 (a) State the modal class interval. (b) Find an estimate of the mean. (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?
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 Frequency 8 14 23 39 16 (a) State the modal class interval. (b) Find an estimate of the mean. (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?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
22.4
answer #2
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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