Answered: True or False) The weekly consumption…

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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Question

a. (True or False) The weekly consumption of favorite beverages from this survey has
approximately a normal distribution, explain your decision.
b. Based on the histogram, which one is greater: mean or median? Explain why.
c. Which summary statistic would be a better representation of the center for this sample:
mean or median?

frequency
0.020
0.015
0.010
0.005
0.000
0
Weekly Consumption of Favorite Beverages
200
400
600
ounce
800
1000

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

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