Standard deviation, MATLAB in Mathematics

Assignment Help:

Standard Deviation

The standard deviation is the square root of variance:

683_standard deviation.png

The built-in function in a MATLAB for the standard deviation is known as std; the standard deviation can be found either as the sqrt of the variance, or by using std:

>> shortx = [2 5 1 4];

>> myvar = var(shortx)

myvar =

    3.3333

>> sqrt(myvar)

ans =

    1.8257

>> std(shortx)

ans =

    1.8257


Related Discussions:- Standard deviation

Indexed empty matrix, Indexed empty matrix: The Individual elements ca...

Indexed empty matrix: The Individual elements cannot be eliminated from matrices, as matrices always have the similar number of elements in every row. >> mat = [7 9 8; 4 6

Writing variables to a file, Writing variables to a File: The save com...

Writing variables to a File: The save command is used to write variables to a file, or to append the variables to a MAT-file. By the default, save function writes to a MAT-fil

Use of string variables, Use of string variables: The Characters invol...

Use of string variables: The Characters involve letters of the alphabet, punctuation marks, digits, white space, and control characters. The Control characters are characters

Illustration of advanced file input and output, Illustration of Advanced fi...

Illustration of Advanced file input and output: For illustration, to refer to the third number in the first element of the cell array: >> subjdata{1}(3) ans =

Three-dimensional plots, Three-Dimensional Plots: The MATLAB has many ...

Three-Dimensional Plots: The MATLAB has many functions which will display three-dimensional plots. Most of these functions have similar name as corresponding two-dimensional p

Plot functions, Plot Functions: Faraway, we have plotted to generate t...

Plot Functions: Faraway, we have plotted to generate two-dimensional plots and bar to generate bar charts. We have seen how to clear the Figure Window by using clf, and how to

Creating string variables, Creating string Variables: The string consi...

Creating string Variables: The string consists of a few numbers of characters (including, possibly, none). These are the illustrations of the strings: '' 'x' 'ca

Variance, The variance is generally defined in terms of the arithmetic me...

The variance is generally defined in terms of the arithmetic mean as: At times, though, the denominator is defined as n instead of n - 1. The default definition used by t

Cholesky factorisation of packed storage matrix, If I have a vector represe...

If I have a vector representing the packed storage form of a symmetric matrix, how do I perform a cholesky factorisation on that?

Customizing plots, Customizing Plots : There are numerous ways to custo...

Customizing Plots : There are numerous ways to customize figures in the Figure Window. On clicking the Plot Tools icon will bring up the Property Editor & Plot Browser, with ma

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd