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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 ii) the upper quartile 49

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 ii) the upper quartile 49

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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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.
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
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