Defense Acquisition Research Journal Issue 95

January 2021

We conclude that: • The ANOVA results support the results from the Hotelling T 2 tests, where we see that group A is statistically significantly different than group B and group C; and group B is statistically significantly different than group C.

The ANOVA test looks at the individual questions within each of these groups to identify which questions returned different responses for each of the systems in the three different testing environments (Pre-experiment less data, Pre-experiment more data, and Post-experiment). The Three Surveys Provide New Significantly Valuable Information The research question we are attempting to answer in this section is: • Do the added information and hands-on experimentation pro vide additional value-added insights? Thirty-three separate Single Variable Multiple Treatment ANOVA models were also run to test the individual questions among the three systems among the three groups (i.e., for each of the survey questions, if each of the three systems has similarities or differences among the Pre-experiment Less Info, Pre-experiment More Info, and Post-experiment groups). Table 7 shows the statistically significant results from the ANOVA models. Out of the 33 models, 16 show statistical significance ( α = 0.05).

19

Defense ARJ, January 2021, Vol. 28 No. 1 : 2-39