Bug 1123

Summary:	Class MinMaxAvgTotalCalculator does not implement all the methods in its interface
Product:	ns-3	Reporter:	Jaume Nin <jaume.nin>
Component:	general	Assignee:	Mitch Watrous <watrous>
Status:	RESOLVED FIXED
Severity:	minor	CC:	tomh
Priority:	P5
Version:	ns-3-dev
Hardware:	All
OS:	All
Attachments:	Patch with the implementation of the unsupported methods

Description Jaume Nin 2011-05-03 09:43:05 UTC

Class MinMaxAvgTotalCalculator only implements the min max and the average calculations, the other ones (standard deviation, sum, squared sum and variance) are not supported.

Comment 1 Jaume Nin 2011-05-03 09:45:05 UTC

Created attachment 1104 [details]
Patch with the implementation of the unsupported methods

Comment 2 Mitch Watrous 2011-06-08 14:53:52 UTC

Negative variance values caused by roundoff can occur if you use standard formulas for the variance found in statistics text books.

Therefore, I calculated the variance based on equations (15) and (16) on page 216 of "The Art of Computer Programming, Volume 2", Second Edition. Donald E. Knuth. Addison-Wesley Publishing Company, 1973.

Comment 3 Mitch Watrous 2011-06-08 14:55:20 UTC

Bug closed.

ns-3-dev changeset:  4f64f4298183