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5. 200 180 160 140 120 Cumulative frequency 100 (sh) 80 60 40 20 10 20 ii) the upper quartile 49 40 30 50 Number of hours worked (h) iii) the inter-quartile range 13 60 200 people record the number of hours they work in a week. The cumulative frequency graph shows this information. a) Use the graph to find: i) the median 36 70

5. 200 180 160 140 120 Cumulative frequency 100 (sh) 80 60 40 20 10 20 ii) the upper quartile 49 40 30 50 Number of hours worked (h) iii) the inter-quartile range 13 60 200 people record the number of hours they work in a week. The cumulative frequency graph shows this information. a) Use the graph to find: i) the median 36 70

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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5. 200 180 160 140 120 Cumulative frequency 100 (sh) 80 60 40 20 0 0 10 20 ii) the upper quartile 49 30 40 50 Number of hours worked (h) iii) the inter-quartile range 13 60 70 200 people record the number of hours they work in a week. The cumulative frequency graph shows this information. a) Use the graph to find: i) the median 36 80 iv) the number of people who work more than 60 hours in a week 180
Transcribed Image Text:5. 200 180 160 140 120 Cumulative frequency 100 (sh) 80 60 40 20 0 0 10 20 ii) the upper quartile 49 30 40 50 Number of hours worked (h) iii) the inter-quartile range 13 60 70 200 people record the number of hours they work in a week. The cumulative frequency graph shows this information. a) Use the graph to find: i) the median 36 80 iv) the number of people who work more than 60 hours in a week 180
b) Omar uses the graph to make the following frequency table. Hours worked (h) Frequency 0<h=10 10<h=20 20<h 30 30<h 40 40<h=50 50<h=60 12 34 36 i) Use the graph to find the values of p and q. 30 Frequency c) Shalini uses the graph to make a different frequency table. 38 82 ii) Calculate an estimate of the mean number of hours worked in a week. 30 30 Hours worked (h) 0<h<30 30<h<40 40<h<50 50<h<80 60<h=70 38 P 50 70<h=80 9 When she draws a histogram, the height of the column for the interval 30 < h≤ 40 is 9cm. Calculate the height of the other three columns.
Transcribed Image Text:b) Omar uses the graph to make the following frequency table. Hours worked (h) Frequency 0<h=10 10<h=20 20<h 30 30<h 40 40<h=50 50<h=60 12 34 36 i) Use the graph to find the values of p and q. 30 Frequency c) Shalini uses the graph to make a different frequency table. 38 82 ii) Calculate an estimate of the mean number of hours worked in a week. 30 30 Hours worked (h) 0<h<30 30<h<40 40<h<50 50<h<80 60<h=70 38 P 50 70<h=80 9 When she draws a histogram, the height of the column for the interval 30 < h≤ 40 is 9cm. Calculate the height of the other three columns.
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