a) What was the mean U.S. sales (in thousand dollars) per store for the 47 restaurant chains? (Round your answer to one decimal place.) $ thousand (b) What are the first and third quartiles (in thousand dollars)? first quartile$ thousandthird quartile$ thousand What is your interpretation of the quartiles? ---Select--- Zero Twenty-five Seventy-five One hundred percent of the restaurants have an average sales per unit less than or equal to the first quartile and ---Select--- zero twenty-five seventy-five one hundred percent of the restaurants have an average sales per unit greater than or equal to the third quartile. (c) Show a boxplot for the level of sales. The box-and-whisker plot has a horizontal axis numbered from 0 to 3500. The box-and-whisker is also horizontal. The left whisker is approximately 207, the left edge of the box is approximately 879, the line inside the box is approximately 1103, the right edge of the box is approximately 1700, and the right whisker is approximately 3158. The box-and-whisker plot has a horizontal axis numbered from 0 to 3500. The box-and-whisker is also horizontal. The left whisker is approximately 0, the left edge of the box is approximately 679, the line inside the box is approximately 1103, the right edge of the box is approximately 1700, and the right whisker is approximately 2600. There is one outlier located at 3158. The box-and-whisker plot has a horizontal axis numbered from 0 to 3500. The box-and-whisker is also horizontal. The left whisker is approximately 207, the left edge of the box is approximately 879, the line inside the box is approximately 1103, the right edge of the box is approximately 1700, and the right whisker is approximately 2600. There is one outlier located at 3158. The box-and-whisker plot has a horizontal axis numbered from 0 to 3500. The box-and-whisker is also horizontal. The left whisker is approximately 207, the left edge of the box is approximately 879, the line inside the box is approximately 1103, the right edge of the box is approximately 1700, and the right whisker is approximately 1700. There is one outlier located at 3158. Are there are any outliers in terms of sales that would skew the results? YesNo

a) What was the mean U.S. sales (in thousand dollars) per store for the 47 restaurant chains? (Round your answer to one decimal place.) $ thousand (b) What are the first and third quartiles (in thousand dollars)? first quartile$ thousandthird quartile$ thousand What is your interpretation of the quartiles? ---Select--- Zero Twenty-five Seventy-five One hundred percent of the restaurants have an average sales per unit less than or equal to the first quartile and ---Select--- zero twenty-five seventy-five one hundred percent of the restaurants have an average sales per unit greater than or equal to the third quartile. (c) Show a boxplot for the level of sales. The box-and-whisker plot has a horizontal axis numbered from 0 to 3500. The box-and-whisker is also horizontal. The left whisker is approximately 207, the left edge of the box is approximately 879, the line inside the box is approximately 1103, the right edge of the box is approximately 1700, and the right whisker is approximately 3158. The box-and-whisker plot has a horizontal axis numbered from 0 to 3500. The box-and-whisker is also horizontal. The left whisker is approximately 0, the left edge of the box is approximately 679, the line inside the box is approximately 1103, the right edge of the box is approximately 1700, and the right whisker is approximately 2600. There is one outlier located at 3158. The box-and-whisker plot has a horizontal axis numbered from 0 to 3500. The box-and-whisker is also horizontal. The left whisker is approximately 207, the left edge of the box is approximately 879, the line inside the box is approximately 1103, the right edge of the box is approximately 1700, and the right whisker is approximately 2600. There is one outlier located at 3158. The box-and-whisker plot has a horizontal axis numbered from 0 to 3500. The box-and-whisker is also horizontal. The left whisker is approximately 207, the left edge of the box is approximately 879, the line inside the box is approximately 1103, the right edge of the box is approximately 1700, and the right whisker is approximately 1700. There is one outlier located at 3158. Are there are any outliers in terms of sales that would skew the results? YesNo

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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The data contained in the file FoodIndustry show the company/chain name, the average sales per store ($1,000s), and the food segment industry for 47 restaurant chains.†

Company	Segment	2012 U.S. Average Sales per Store ($1,000s)
Arby's	Sandwich	993
Baskin-Robbins	Snacks	207
Bojangles'	Chicken	1,718
Boston Market	Chicken	1,184
Burger King	Burger	1,195
Carl's Jr.	Burger	1,470
Checkers/Rally's	Burger	903
Chick-fil-A	Chicken	3,158
Chipotle Mexican Grill	Mexican	2,113
Church's Chicken	Chicken	707
CiCi's Pizza	Pizza/Pasta	915
Culver's	Burger	1,838
Dairy Queen	Burger	545
Del Taco	Mexican	1,100
Domino's Pizza	Pizza/Pasta	710
Dunkin' Donuts	Snacks	857
El Pollo Loco	Chicken	1,475
Five Guys Burgers & Fries	Burger	1,049
Hardee's	Burger	1,145
In-N-Out Burger	Burger	1,935
Jack in the Box	Burger	1,379
Jamba Juice	Snacks	715
Jason's Deli	Sandwich	2,556
Jimmy John's	Sandwich	879

Company	Segment	2012 U.S. Average Sales per Store ($1,000s)
KFC	Chicken	957
Krispy Kreme	Snacks	2,428
Little Caesars	Pizza/Pasta	465
McDonald's	Burger	2,600
Moe's Southwest Grill	Mexican	1,103
Panera Bread	Sandwich	2,427
Papa John's	Pizza/Pasta	829
Papa Murphy's	Pizza/Pasta	575
Pizza Hut	Pizza/Pasta	883
Popeyes Louisiana Kitchen	Chicken	1,242
Qdoba Mexican Grill	Mexican	966
Quiznos	Sandwich	345
Sonic Drive-In	Burger	1,074
Starbucks	Snacks	1,223
Steak 'n Shake	Burger	1,700
Subway	Sandwich	481
Taco Bell	Mexican	1,363
Tim Hortons	Snacks	1,095
Wendy's	Burger	1,484
Whataburger	Burger	1,996
White Castle	Burger	1,284
Wingstop	Chicken	902
Zaxby's	Chicken	1,766

(a)

What was the mean U.S. sales (in thousand dollars) per store for the 47 restaurant chains? (Round your answer to one decimal place.)

$ thousand

(b)

What are the first and third quartiles (in thousand dollars)?

first quartile$ thousandthird quartile$ thousand

What is your interpretation of the quartiles?

---Select--- Zero Twenty-five Seventy-five One hundred percent of the restaurants have an average sales per unit less than or equal to the first quartile and ---Select--- zero twenty-five seventy-five one hundred percent of the restaurants have an average sales per unit greater than or equal to the third quartile.

(c)

Show a boxplot for the level of sales.

The box-and-whisker plot has a horizontal axis numbered from 0 to 3500. The box-and-whisker is also horizontal. The left whisker is approximately 207, the left edge of the box is approximately 879, the line inside the box is approximately 1103, the right edge of the box is approximately 1700, and the right whisker is approximately 3158.

The box-and-whisker plot has a horizontal axis numbered from 0 to 3500. The box-and-whisker is also horizontal. The left whisker is approximately 0, the left edge of the box is approximately 679, the line inside the box is approximately 1103, the right edge of the box is approximately 1700, and the right whisker is approximately 2600. There is one outlier located at 3158.

Are there are any outliers in terms of sales that would skew the results?

YesNo

(d)

Develop a frequency distribution showing the average sales (in thousand dollars) per store for each segment. (Round your answers to the nearest thousand dollars.)

Segment	Average Sales per unit ($1,000s)
Burger	$ thousand
Chicken	$ thousand
Mexican	$ thousand
Pizza/Pasta	$ thousand
Sandwich	$ thousand
Snacks	$ thousand

Comment on the results obtained.

The segment with lowest average sales per unit is ---Select--- Burger Chicken Mexican Pizza/Pasta Sandwich Snacks .

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