
RATIO OFName:
is equivalent to entering
LET S2 = STANDARD DEVIATION Y2 LET R = S1/S2 The advantage of using the RATIO OF command is that you can use the ratio statistic in commands such as the BOOTSTRAP PLOT and STATISTIC PLOT. The statistic specified in the RATIO OF command must be one that is computed for a single response variable (e.g., the CORRELATION statistic is not supported by this command). Although the RATIO OF command was motivated by scale statistics, it can be used for any supported statistic for a single response variable.
<SUBSET/EXCEPT/FOR qualification> where <stat> is one of Dataplot's supported statistics for a single response variable; <y> is the response variable; <par> is a parameter where the computed ratio is saved; and where the <SUBSET/EXCEPT/FOR qualification> is optional.
LET A = RATIO OF STANDARD DEVIATIONS Y1 Y2 SUBSET Y2 > 0 LET A = RATIO OF MEDIAN ABSOLUTE DEVIATIONS Y1 Y2 LET A = RATIO OF RANGE Y1 Y2 LET A = RATIO OF INTERQUARTILE RANGE Y1 Y2
SKIP 25 READ AUTO83B.DAT Y1 Y2 RETAIN Y2 SUBSET Y2 >= 0 . BOOTSTRAP SAMPLES 10000 BOOTSTRAP RATIO OF MEDIAN ABSOLUTE DEVIATION PLOT Y1 Y2The following output is generated
Bootstrap Analysis for the MEDIAN ABSOLUTE DEVIATION Response Variable One: Y1 Response Variable Two: Y2 Number of Bootstrap Samples: 10000 Number of Observations: 79 Mean of Bootstrap Samples: 1.02095 Standard Deviation of Bootstrap Samples: 0.27222 Median of Bootstrap Samples: 1.00000 MAD of Bootstrap Samples: 0.20000 Minimum of Bootstrap Samples: 0.50000 Maximum of Bootstrap Samples: 2.50000 Percent Points of the Bootstrap Samples  Percent Point Value  0.1 = 0.50000 0.5 = 0.60000 1.0 = 0.60000 2.5 = 0.66667 5.0 = 0.75000 10.0 = 0.80000 20.0 = 0.80000 50.0 = 1.00000 80.0 = 1.25000 90.0 = 1.33333 95.0 = 1.33333 97.5 = 1.66667 99.0 = 2.00000 99.5 = 2.50000 99.9 = 2.50000 Percentile Confidence Interval for Statistic  Confidence Lower Upper Coefficient Limit Limit  50.00 0.80000 1.00000 75.00 0.80000 1.33333 90.00 0.75000 1.33333 95.00 0.66667 1.66667 99.00 0.60000 2.50000 99.90 0.50000 2.50000 
 
Date created: 08/28/2023 Last updated: 08/28/2023 Please email comments on this WWW page to alan.heckert@nist.gov. 