Table 9.
Study 2 Mean Scores and Standard Deviations.
| N | Mean | St. Dev. | |
|---|---|---|---|
| Total Letter Sets Score | 138 | 9.77 | 2.33 |
| Total Number Series Score | 138 | 11.08 | 2.57 |
| Total Score Hypotheses, Free Response, Form A | 70 | 7.13 | 2.65 |
| Total Score Hypotheses, Free Response, Form B | 69 | 7.61 | 3.03 |
| Total Score Hypotheses, Multiple Choice, Form A | 70 | 2.10 | 0.57 |
| Total Score Hypotheses, Multiple Choice, Form B | 69 | 2.23 | 0.79 |
| Total Score Experiments, Free Response, Form A | 70 | 7.23 | 1.24 |
| Total Score Experiments, Free Response, Form B | 69 | 7.39 | 1.34 |
| Total Score Experiments, Multiple Choice, Form A | 70 | 1.97 | 0.74 |
| Total Score Experiments, Multiple Choice, Form B | 69 | 2.03 | 0.80 |
| Total Score Conclusions, Free Response, Form A | 70 | 5.16 | 0.90 |
| Total Score Conclusions, Free Response, Form B | 69 | 5.64 | 1.15 |
| Total Score Conclusions, Multiple Choice, Form A | 70 | 2.24 | 0.81 |
| Total Score Conclusions, Multiple Choice, Form B | 69 | 1.58 | 0.83 |
| Total Score HypExpConcl, Free Response, Form A | 70 | 19.51 | 3.35 |
| Total Score HypExpConcl, Free Response, Form B | 69 | 20.64 | 4.25 |
| Total Score HypExpConcl, Multiple Choice, Form A | 70 | 6.31 | 1.29 |
| Total Score HypExpConcl, Multiple Choice, Form B | 69 | 5.84 | 1.61 |
| Age | 139 | 19.22 | 0.97 |
| GPA | 94 | 3.58 | 0.41 |
| SATReading | 89 | 719.16 | 56.92 |
| SATMath | 89 | 743.82 | 57.99 |
| ACT | 80 | 32.90 | 1.80 |
| Math and Science Courses Number | 139 | 5.47 | 5.39 |
| Lab Courses Number | 139 | 1.50 | 1.99 |
Notes: HypExpConcl refers to total score for generating hypotheses, generating experiments, and drawing conclusions.