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Dataplot Vol 2 Vol 1

DIFFERENCE OF HARMONIC MEAN

Name:
    DIFFERENCE OF HARMONIC MEAN (LET)
Type:
    Let Subcommand
Purpose:
    Compute the difference between the harmonic means for two response variables.
Description
    The harmonic mean is defined as:

      \( \mbox{HM} = \frac{n} {\sum_{i=1}^{n}{1/X_{i}}} \)

    For the differeence of harmonic means, the harmonic mean is computed for each of two samples then their difference is taken.

Syntax:
    LET <par> = DIFFERENCE OF HARMONIC MEAN <y1> <y2>
                            <SUBSET/EXCEPT/FOR qualification>
    where <y1> is the first response variable;
                <y2> is the first response variable;
                <par> is a parameter where the computed difference of the harmonic means is stored;
    and where the <SUBSET/EXCEPT/FOR qualification> is optional.
Examples:
    LET A = DIFFERENCE OF HARMONIC MEAN Y1 Y2
    LET A = DIFFERENCE OF HARMONIC MEAN Y1 Y2 SUBSET X > 1
Note:
    Dataplot statistics can be used in a number of commands. For details, enter

Default:
    None
Synonyms:
    None
Related Commands: Applications:
    Data Analysis
Implementation Date:
    2003/03
Program:
    SKIP 25 
    READ IRIS.DAT Y1 TO Y4 X 
    . 
    LET A = DIFFERENCE OF HARMONIC MEAN Y1 Y2 
    TABULATE DIFFERENCE OF HARMONIC MEAN Y1 Y2 X 
    . 
    XTIC OFFSET 0.2 0.2
    X1LABEL GROUP ID
    Y1LABEL DIFFERENCE OF HARMONIC MEAN
    CHAR X 
    LINE BLANK 
    DIFFERENCE OF HARMONIC MEAN PLOT Y1 Y2 X 
    CHAR X ALL 
    LINE BLANK ALL 
    BOOTSTRAP DIFFERENCE OF HARMONIC MEAN PLOT Y1 Y2 X  
        
    Dataplot generates the following output.
           *************************************************
           **  LET A = DIFFERENCE OF HARMOMIC MEAN Y1 Y2  **
           *************************************************
      
      
     THE COMPUTED VALUE OF THE CONSTANT A             =  0.27330902E+01
      
      
           ****************************************************
           **  TABULATE DIFFERENCE OF HARMOMIC MEAN Y1 Y2 X  **
           ****************************************************
      
      
                     *    Y1       AND Y2
         X           *    DIFFERENCE OF HARMONIC MEANS
     **********************************************
         1.00000     *     1.59614
         2.00000     *     3.15893
         3.00000     *     3.58727
      
           GROUP-ID AND STATISTIC WRITTEN TO FILE DPST1F.DAT
        
    plot generated by sample program

    plot generated by sample program

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Date created: 03/21/2003
Last updated: 11/09/2015

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