Calculate the sample standard deviation for this data set: 88, 73, 91.
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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Calculate the sample standard deviation for this data set: 88, 73, 91. The formula for the sample standard deviation is shown, where ?n represents the
?=∑(?−?⎯⎯⎯)2?−1⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯√s=∑(x−x¯)2n−1
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Step 1. Calculate the sample mean.
?⎯⎯⎯x¯ =
Step 2. Calculate the deviations and the squares of the deviations.
deviation of 88=
square of deviation of 88=
deviation of 73=
square of deviation of 73=
deviation of 91=
square of deviation of 91=
Step 3. Calculate the sample variance and the sample standard deviation. Provide your sample standard deviation answer precise to one decimal place.
sample variance =
sample standard deviation =
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