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Name: PSE&G has a reputation for fixing any electric system problems quickly
Uploaded: 2024-03-20T07:07:12.000Z
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Description: PSE&G has a reputation for fixing any electric system problems quickly. Over the past decade various severe storms caused a problem with electrical service. In a sample of seven severe storms, it took the following number of days to restore service

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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PSE&G has a reputation for fixing any electric system problems quickly. Over the past decade various severe storms caused a problem with electrical service. In a sample of seven severe storms, it took the following number of days to restore service: 13, 12, 8, 3, 8, 2, 28. Management at PSE&G feels the 28 days were recorded in error (should be either 2 or 8) and should not be used in any analysis. How do you respond to management? (must prove statistically). Some information you may or may not need include: mean = 10.6, median = 8; standard deviation = 8.1, variance = 65.5 and range = 26.

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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