This is machine translation

Translated by Microsoft
Mouseover text to see original. Click the button below to return to the English verison of the page.

Note: This page has been translated by MathWorks. Please click here
To view all translated materals including this page, select Japan from the country navigator on the bottom of this page.


Quadratic mean of a data sample

MuPAD® notebooks are not recommended. Use MATLAB® live scripts instead.

MATLAB live scripts support most MuPAD functionality, though there are some differences. For more information, see Convert MuPAD Notebooks to MATLAB Live Scripts.


stats::quadraticMean(x1, x2, …)
stats::quadraticMean([x1, x2, …])
stats::quadraticMean(s, <c>)


stats::quadraticMean(x1, x2, …, xn) returns the quadratic mean

of the data xi.

The column index c is optional, if the data are given by a stats::sample object containing only one non-string column. Cf. Example 3.

External statistical data stored in an ASCII file can be imported into a MuPAD® session via import::readdata. In particular, see Example 1 of the corresponding help page.


Example 1

We calculate the quadratic mean of three values:

stats::quadraticMean(a, b, c)

Alternatively, data may be passed as a list:

stats::quadraticMean([2, 3, 5])

Example 2

We create a sample:

stats::sample([[a1, b1, c1], [a2, b2, c2]])
a1  b1  c1
a2  b2  c2

The quadratic mean of the second column is:

stats::quadraticMean(%, 2)

Example 3

We create a sample consisting of one string column and one non-string column:

stats::sample([["1996", 1242], ["1997", 1353], ["1998", 1142]])
"1996"  1242
"1997"  1353
"1998"  1142

We compute the quadratic mean of the second column. In this case this column does not have to be specified, since it is the only non-string column:



x1, x2, …

The statistical data: arithmetical expressions.


A sample of domain type stats::sample.


An integer representing a column index of the sample s. This column provides the data x1, x2 etc.

Was this topic helpful?