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The table to the right gives the number of people by age group in a town of 100 000. (a) Add two columns to the table. In the first, calculate the relative frequency by dividing the number of

The table to the right gives the number of people by age group in a town of 100 000. (a) Add two columns to the table. In the first, calculate the relative frequency by dividing the number of

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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Please answer Question 8.
8. The table to the right gives the Age Frequency number of people by age group in a town of 100 000. (a) Add two columns to the table. In the first, calculate the relative frequency by dividing the number of people by the total. (b) In the second, calculate the cumulative frequency by finding the sum of all groups less than or equal to that group (the total so far). (c) Construct a histogram of the relative frequency in which the bar height is the percent each interval represents of the population. (d) Construct a histogram of the cumulative frequency. (e) Use the histogram to describe the distribution. (f) What effect does the bin size of the first and last groups have on your interpretation of these data? AS5 12 100 5 < AS 15 22 300 15 < As 25 19 600 relative frequency-the percent that an interval represents of the whole population 25 < As 35 16 000 35 < AS 45 12 200 cumulative 45 < AS 55 8 400 frequency-the total of all frequencies up to a 55 < AS 65 5 300 certain value of the variable A > 65 4 100 9. The amounts withdrawn from an ATM are recorded over a single day. $20 $60 $100 $ 20 $80 $ 40 $50 $ 60 $110 $ 40 $ 40 $20 $30 $40 $60 $80 $40 $50 $20 $60 $ 30 $40 $ 40 $80 $ 20 $100 $ 20 $ 60 $40 $ 60 $40 $80 $80 $200 $40 (a) What bin width gives a good representation of the data? (b) What do you notice about the larger amounts? How does this affect the graph? 10. Record the age (in years and months) of each of your classmates, and then create a histogram for the data. What observations can you make? 11. Create a bar graph for each city.
Transcribed Image Text:8. The table to the right gives the Age Frequency number of people by age group in a town of 100 000. (a) Add two columns to the table. In the first, calculate the relative frequency by dividing the number of people by the total. (b) In the second, calculate the cumulative frequency by finding the sum of all groups less than or equal to that group (the total so far). (c) Construct a histogram of the relative frequency in which the bar height is the percent each interval represents of the population. (d) Construct a histogram of the cumulative frequency. (e) Use the histogram to describe the distribution. (f) What effect does the bin size of the first and last groups have on your interpretation of these data? AS5 12 100 5 < AS 15 22 300 15 < As 25 19 600 relative frequency-the percent that an interval represents of the whole population 25 < As 35 16 000 35 < AS 45 12 200 cumulative 45 < AS 55 8 400 frequency-the total of all frequencies up to a 55 < AS 65 5 300 certain value of the variable A > 65 4 100 9. The amounts withdrawn from an ATM are recorded over a single day. $20 $60 $100 $ 20 $80 $ 40 $50 $ 60 $110 $ 40 $ 40 $20 $30 $40 $60 $80 $40 $50 $20 $60 $ 30 $40 $ 40 $80 $ 20 $100 $ 20 $ 60 $40 $ 60 $40 $80 $80 $200 $40 (a) What bin width gives a good representation of the data? (b) What do you notice about the larger amounts? How does this affect the graph? 10. Record the age (in years and months) of each of your classmates, and then create a histogram for the data. What observations can you make? 11. Create a bar graph for each city.
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