ANOVA1 Process

To access this process:

View the Find Command screen, select ANOVA1 and click Run.
Enter "ANOVA1" into the Command Line and press <ENTER>.

See this process in the Command Table.

Process Overview

Carries out one-way analysis of variance on groups of replicate values of a numeric field in a file.

All results are output as an analysis of variance (ANOVA) table. This lists the sources of variation, a column of the corrected sums of squares resulting from the various sources, degrees of freedom associated with each, a column of mean squares which are the sample-based estimates of the variances, and the F-value.

Note: The total keyfield must be no more than 5 words long. Remember that an alphanumeric field should be no more than two words long.

Input Files

Name	Description	I/O Status	Required	Type
IN	Input file, sorted on required keyfields.	Input	Yes	Table

Fields

Name	Description	Source	Required	Type	Default
VALUE	Field for analysis of variance.	IN	Yes	Numeric	Undefined
KEY1	Keyfield 1 for replicate observations.	IN	Yes	Numeric	Undefined
KEY2	Keyfield 2.	IN	No	Numeric	Undefined
KEY3	Keyfield 3.	IN	No	Numeric	Undefined
KEY4	Keyfield 4.	IN	No	Numeric	Undefined
KEY5	Keyfield 5.	IN	No	Numeric	Undefined
KEY6	Keyfield 6.	IN	No	Numeric	Undefined
KEY7	Keyfield 7.	IN	No	Numeric	Undefined
KEY8	Keyfield 8.	IN	No	Numeric	Undefined
KEY9	Keyfield 9.	IN	No	Numeric	Undefined
KEY10	Keyfield 10.	IN	No	Numeric	Undefined

Example

!ANOVA1 &IN(SEDREG),*VALUE(MN),*KEY1(SNUM)

Error and Warning Messages

Message	Description
>>> VALUE FIELD DOES NOT EXIST <<<	The numeric field specified for *VALUE does not exist. Fatal; the process is exited.
>>> ERR 47 <<< ( 0) IN FNDKEY	None of the keys specified were in the file. Fatal; the process is exited.
>>> INPUT FILE NOT SORTED ON KEYFIELD(S) <<<	Fatal; the process is exited.
>>> ERR 121 <<< ( fileno) IN ANOVA1	File read error. Fatal; the process is exited.
>>> MORE THAN 1000 REPLICATES <<< >>> ONLY THE FIRST 1000 USED <<<	The maximum number of points which may be processed is 1000. All other points are ignored, and processing continues with the first 1000.
>>> MORE THAN 250 GROUPS <<< >>> ONLY THE FIRST 250 USED <<<	The maximum number of groups of points which may be processed is 250. All other groups of points are ignored, and processing continues with the first 250.
>>> TOO FEW REPLICATES AND/OR GROUPS <<< >>> CANNOT CARRY OUT ANALYSIS OF VARIANCE <<< >>> MINIMUM REQUIREMENT IS FOR 2 REPLICATES <<< >>> IN EACH OF 2 GROUPS <<<	Insufficient data in input file for analysis of variance. Fatal; the process is exited.