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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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Hello, this is a question I am having difficulty on. Can you please help me? It is a multi-part question. I can send a screenshot of the question in the homework itself if need be. I am mostly having difficulty on the IQR part of it.

The data below are the annual numbers of deaths from tornadoes in a certain country over a span of 21 years. Write a short report describing the distribution of the number of deaths in this time period.

30 25 67 130 94 41 40 55 54 35 38 67 81 126 21 45 553 70 55 47 36

The distribution of deaths from tornadoes is

a) Slightly skewed to the right

b) Slightly skewed to the left

c) Perfectly symmetrical

with one extreme outlier at [fill in]. The median is [fill in] deaths, and the IQR is [fill in] deaths.

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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