Question: Compare the three methods for adjusting the p-values in terms of the substantive results? Based on the output for 3b, does it matter in this
Compare the three methods for adjusting the p-values in terms of the substantive results? Based on the output for 3b, does it matter in this example whether or not we control for family-wise error rate? Why or why not? Multiple Comparisons Dependent Variable: Frequency_prosocial_behavior (I) Drug (J) Drug Mean Difference (I-J) Std. Error Sig. 95% Confidence Interval Lower Bound Upper Bound Tukey HSD Control Drug X -3.6250 1.80181 .138 -8.2235 .9735 Drug Y -5.2500* 1.80181 .024 -9.8485 -.6515 Drug X Control 3.6250 1.80181 .138 -.9735 8.2235 Drug Y -1.6250 1.80181 .646 -6.2235 2.9735 Drug Y Control 5.2500* 1.80181 .024 .6515 9.8485 Drug X 1.6250 1.80181 .646 -2.9735 6.2235 Scheffe Control Drug X -3.6250 1.80181 .161 -8.4292 1.1792 Drug Y -5.2500* 1.80181 .031 -10.0542 -.4458 Drug X Control 3.6250 1.80181 .161 -1.1792 8.4292 Drug Y -1.6250 1.80181 .672 -6.4292 3.1792 Drug Y Control 5.2500* 1.80181 .031 .4458 10.0542 Drug X 1.6250 1.80181 .672 -3.1792 6.4292 LSD Control Drug X -3.6250 1.80181 .059 -7.4105 .1605 Drug Y -5.2500* 1.80181 .009 -9.0355 -1.4645 Drug X Control 3.6250 1.80181 .059 -.1605 7.4105 Drug Y -1.6250 1.80181 .379 -5.4105 2.1605 Drug Y Control 5.2500* 1.80181 .009 1.4645 9.0355 Drug X 1.6250 1.80181 .379 -2.1605 5.4105 Based on observed means. The error term is Mean Square(Error) = 12.986. * The mean difference is significant at the .05 level.
Multiple Comparisons Dependent Variable: Frequency_prosocial_behavior Mean 95% Confidence Interval (1) Drug (J) Drug Difference (1-J) Std. Error Sig. Lower Bound Upper Bound Tukey HSD Control Drug X -3.6250 1.80181 138 8.2235 9735 Drug Y -5.2500 1.80181 024 -9.8485 -.6515 Drug X Control 3.6250 1.80181 .138 -.9735 8.2235 Drug Y -1.6250 1.80181 646 -6.2235 2.9735 Drug Y Control 5.2500 1.80181 .024 6515 9.8485 Drug X 1.6250 1.80181 .646 -2.9735 6.2235 Scheffe Control Drug X -3.6250 1.80181 161 8.4292 1.1792 Drug Y -5.2500 1.80181 031 -10.0542 -.4458 Drug X Control 3.6250 1.80181 161 -1.1792 8.4292 Drug Y -1.6250 1.80181 672 -6.4292 3.1792 Drug Y Control 5.2500 1.80181 .031 4458 10.0542 Drug X 1.6250 1.80181 .672 -3.1792 6.4292 LSD Control Drug X -3.6250 1.80181 059 -7.4105 .1605 Drug Y -5.2500 1.80181 .009 -9.0355 -1.4645 Drug x Control 3.6250 1.80181 059 -.1605 7.4105 Drug Y -1.6250 1.80181 379 -5.4105 2.1605 Drug Y Control 5.2500 1.80181 009 1.4645 9.0355 Drug X 1.6250 1.80181 .379 -2.1605 5.4105 Based on observed means. The error term is Mean Square (Error) = 12.986. *. The mean difference is significant at the .05 levelStep by Step Solution
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