A data set on monthly expenditures (rounded to the nearest dollar) incurred on fast food by a sample of 500 households has a minimum value of $5 and a maximum value of $147. Suppose we want to group these data into six classes of equal widths. a. Assuming we take the lower limit of the first class as $1 and the upper limit of the sixth class as $150, write the class limits for all six classes. b. Determine the class boundaries and class widths. c. Find the class midpoints. (For the first class set the upper limit of the previous class to be 0.) Class limits Lower boundary Upper boundary Midpoint Enter you answer; the lower limit of the first class toEnter you answer; the upper limit of the first class 0.5 Enter you answer; Upper boundary of the first class Enter you answer; Midpoint of the first class Enter you answer; the lower limit of the second class toEnter you answer; the upper limit of the second class Enter you answer; Lower boundary of the second class Enter you answer; Upper boundary of the second class Enter you answer; Midpoint of the second class 51 to 75 50.5 75.5 Enter you answer; Midpoint of the third class 76 to 100 75.5 100.5 Enter you answer; Midpoint of the 4th class 101 to 125 100.5 125.5 Enter you answer; Midpoint of the 5th class 126 to 150 125.5 150.5 Enter you answer; Midpoint of the 6th class Class width = Enter you answer; Class width

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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A data set on monthly expenditures (rounded to the nearest dollar) incurred on fast food by a sample of 500 households has a minimum value of $5 and a maximum value of $147. Suppose we want to group these data into six classes of equal widths.

a. Assuming we take the lower limit of the first class as $1 and the upper limit of the sixth class as $150, write the class limits for all six classes.
b. Determine the class boundaries and class widths.
c. Find the class midpoints.
(For the first class set the upper limit of the previous class to be 0.)

Class limits	Lower boundary	Upper boundary	Midpoint
Enter you answer; the lower limit of the first class toEnter you answer; the upper limit of the first class	0.5	Enter you answer; Upper boundary of the first class	Enter you answer; Midpoint of the first class
Enter you answer; the lower limit of the second class toEnter you answer; the upper limit of the second class	Enter you answer; Lower boundary of the second class	Enter you answer; Upper boundary of the second class	Enter you answer; Midpoint of the second class
51 to 75	50.5	75.5	Enter you answer; Midpoint of the third class
76 to 100	75.5	100.5	Enter you answer; Midpoint of the 4th class
101 to 125	100.5	125.5	Enter you answer; Midpoint of the 5th class
126 to 150	125.5	150.5	Enter you answer; Midpoint of the 6th class

Class width = Enter you answer; Class width

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