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t-statistic,

t-statistic,

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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If a researcher did not wish to assume homogeneity of variance for this analysis, which values would they report for the t-statistic, degrees of freedom, and p-value? Would the conclusions change?

The TTEST Procedure Variable: passgrs gender N Mean Std Dev Std Err Minimum Маximum female 103 0.6796 0.8309 0.0819 3.0000 male 97 1.1031 1.0654 0.1082 7.0000 Diff (1-2) -0.4235 0.9519 0.1347 gender Method Mean 95% CL Mean Std Dev 95% CL Std Dev female 0.6796 0.5172 0.8420 0.8309 0.7309 0.9630 male 1.1031 0.8884 1.3178 1.0654 0.9337 1.2408 Diff (1-2) Diff (1-2) Рooled -0.4235 -0.6891 -0.1579 0.9519 0.8666 1.0558 Satterthwaite -0.4235 -0.6912 -0.1558 Method Variances DF t Value Pr > |t| Pooled Equal 198 -3.14 0.0019 Satterthwaite Unequal 181.45 -3.12 0.0021
Transcribed Image Text:The TTEST Procedure Variable: passgrs gender N Mean Std Dev Std Err Minimum Маximum female 103 0.6796 0.8309 0.0819 3.0000 male 97 1.1031 1.0654 0.1082 7.0000 Diff (1-2) -0.4235 0.9519 0.1347 gender Method Mean 95% CL Mean Std Dev 95% CL Std Dev female 0.6796 0.5172 0.8420 0.8309 0.7309 0.9630 male 1.1031 0.8884 1.3178 1.0654 0.9337 1.2408 Diff (1-2) Diff (1-2) Рooled -0.4235 -0.6891 -0.1579 0.9519 0.8666 1.0558 Satterthwaite -0.4235 -0.6912 -0.1558 Method Variances DF t Value Pr > |t| Pooled Equal 198 -3.14 0.0019 Satterthwaite Unequal 181.45 -3.12 0.0021
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