#1668: r.regression.line F-test incorrect
-------------------------+--------------------------------------------------
Reporter: cmbarton | Owner: grass-dev@…
Type: defect | Status: new
Priority: normal | Milestone: 7.0.0
Component: Raster | Version: unspecified
Keywords: | Platform: Unspecified
Cpu: Unspecified |
-------------------------+--------------------------------------------------
Comment(by cmbarton):
These DO give VERY different values. For slope vs. elevation in my
Spearfish example, the current equation gives a value of -0.2320019531,
while the revised equation gives a value of 1.02410689008565E-006.
http://www.weibull.com/DOEWeb/hypothesis_tests_in_simple_linear_regression.htm
defines
F = SumSq Regression /( SumSq Errors / (count - 2))
--
Ticket URL: <http://trac.osgeo.org/grass/ticket/1668#comment:2>
GRASS GIS <http://grass.osgeo.org>
_______________________________________________
grass-dev mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/grass-dev
