Answered: The university doctor gave me a…

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 university doctor gave me a question related to statistics. The question states: The following data represent the grades of students of the Department of Environmental Sciences, the first stage in the subject of statistice 81,35,86,91,69,72,47,66,80,55,90,53,43,56,80,77,59 Not: The first number is 81 and the last number is 59 The following is required to be found : 1_ the arithmetic mean(SMA) 2_ median(Mediator). 3_ mode(Vein). 4_range(Term). 5_standard deviation. 6_variance. Note: The solution is in detail

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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