2.13.4.1 friedman(Pro)

Menu Information

Statistics: Nonparametric Tests: Friedman ANOVA

Brief Information

Perform a Friedman ANOVA

Additional Information

This feature is for OriginPro only.

Command Line Usage

  1. friedman irng:=(col(a),col(b),col(c));
  2. friedman irng:=(col(a),col(b),col(c)) rt:=<new: Friedman>;

X-Function Execution Options

Please refer to the page for additional option switches when accessing the x-function from script

Variables

Display
Name 		Variable
Name 		I/O
and
Type 		Default
Value 		Description
Input Data Form type

Input

int

0
 Specify the input data form.

Options:

  • Indexed
    Input data range, including input data, factor and subject.
Example:
Friedman irng:=(1,2,3)
In this example, input data should be stored in the first column, input factor values(treatments) should be stored in the second column, and input subject values(blocks) should be stored in the third column.
  • Raw
    The input data are at least two data columns.
Input irng

Input

Range

<active>
 Specify the input data.

For indexed data, the input data range includes input data, factor values (treatments), and subject values (blocks). The input data range must be balanced design.

Significance Level alpha

Input

double

0.05
 Specify the significance level of the test.
Output Results rt

Output

ReportTree

[<input>]<new>
 Output results, including report table of Descriptive Statistics, Ranks, and Test Statistics.

Examples

Let us take the below indexed data as an example.

Friedman example data.png
  1. By Script

    2. Activate the worksheet with data, and then run friedman irng:=(col(a),col(b),col(c)) rt:=<new: Friedman>; in Command Window.

    This script will return friedman ANOVA for specified input data columns. In the script, column a should be input data range, column b should be input treatment range (factor range), and column c should be input block range (subject range). The results will output to a new worksheet named Friedman.

  2. By Menu
    1. Activate the worksheet with the data, and then select Statistics: Nonparametric Tests: Friedman ANOVA to open the friedman dialog.
    2. Select the input range as in the following image:
      Friedman example dialog.png
    3. Click the OK button to get the below result.
      Friedman example result.png

More Information

For more information, please refer to our User Guide.

References

Nag C Library Function Document, nag_friedman_test (g08aec)