Answered: The speed, in miles per hour, of…

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

The speed, in miles per hour, of Mario's serves during tennis practice is shown in the stem-and-leaf plot below.

The speed of one additional tennis serve will be added to Mario's stem-and-leaf plot. What is the greatest amount, in miles per hour, the median speed can change? Show or explain how you got your answer.

4
5
6
7
8
Tennis Serve Speeds
(in miles per hour)
8
0 0 45 7
0111335
2 4 4 568
01145
Key
50 represents 50

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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