Investigation of the robustness of the student's t-test under the violation of the assumption of equality of variances
Hadd, Harry Alben, Jr.
Tuck, Gary A.
MetadataShow full item record
The robustness of the Student's t -test is investigated under the violation of the assumption of equality of variances. With the aid of computer simulation, Type I and Type II error rates and the resulting statistical inference are studied and the effects of unequal variances on rejection rates and the power of the test are determined. Limits are determined on the degree of violation of the equality of variances that still leads to a satisfactory result when Student's distribution is used.
Approved for public release; distribution is unlimited
Showing items related by title, author, creator and subject.
The potential utility of high-resolution ensemble sensitivity analysis for observation placement during weak flow in complex terrain Wile, Sean M.; Hacker, Joshua P.; Chilcoat, Kenneth H. (American Meteorological Society, 2015);Expansion in the availability of relocatable near-surface atmospheric observing sensors introduces the question of where placement maximizes gain in forecast accuracy. As one possible method of addressing observation ...
Brown, Gerald G.; Rutemiller, Herbert (1977-10);Applications in operations research often employ models which contain linear functions. These linear functions may have some components (coefficients and variables) which are random. (For instance, linear functions in ...
Vio, Renato P.; Cristi, Roberto; Smith, Kevin B. (IEEE, 2016);The primary objective of this work is to enhance the navigational and positioning accuracy of Unmanned Underwater Vehicles (UUVs) by networking a number of Unmanned Surface Vehicles (USVs) utilizing underwater acoustic ...