VarianceP()

 <  Day Day Up  >  

VarianceP()

Category: Aggregate

Syntax: VarianceP ( field { ; field...} )

Parameters: field ”any related field, repeating field, or set of non-repeating fields that represent a collection of numbers .

Description: Returns the variance of a population represented by the non-blank values in the parameter list. Variance of population is a statistical measure of how spread out a set of values is.

Examples:

The variance of a population represented by a set of numbers can be calculated by summing the squares of the distance of each value from the mean, then dividing by n , where n is the number of values.

For instance, given the set of number 8, 10, and 12, the mean of the set is 10. The distance of each value from the mean is -2, 0, and 2. The squares of these distances are 4, 0, and 4, and the sum of the squares is 8. The VarianceP is 8 divided by (3), which is 2.67.

 

 VarianceP (8; 10; 12) 

Returns 2.67 .

 

 VarianceP (7; 11; 15) 

Returns 10.66 .

Comments:

The StDevP() of a set of numbers is the square root of the VarianceP() of the set.

 <  Day Day Up  >  


QUE CORPORATION - Using Filemaker pro X
QUE CORPORATION - Using Filemaker pro X
ISBN: N/A
EAN: N/A
Year: 2003
Pages: 494

flylib.com © 2008-2017.
If you may any questions please contact us: flylib@qtcs.net