Table 6 Descriptive statistics for pilot study administration (whole dataset, by gender, and by grade)
Whole dataset | Classified by gender | Classified by grade | |||||
|---|---|---|---|---|---|---|---|
Male | Female | 8th | 10th | 11th | |||
N | Valid | 174 | 82 | 92 | 44 | 19 | 111 |
Missing | 11 | 4 | 7 | 8 | 0 | 3 | |
Mean | 76.46 | 76.16 | 76.73 | 71.50 | 79.42 | 77.92 | |
95% Confidence Interval for Mean | Lower Bound | 74.49 | 73.12 | 74.13 | 66.86 | 74.05 | 75.64 |
Upper Bound | 78.43 | 79.20 | 79.33 | 76.14 | 84.79 | 80.20 | |
5% Trimmed Mean | 77.15 | 77.07 | 77.25 | 72.27 | 79.47 | 78.51 | |
Std. Error of Mean | .997 | 1.529 | 1.309 | 2.300 | 2.555 | 1.151 | |
Median | 77.50 | 77.00 | 79.00 | 72.50 | 81.00 | 79.00 | |
Std. Deviation | 13.147 | 13.848 | 12.560 | 15.254 | 11.137 | 12.128 | |
Variance | 172.851 | 191.765 | 157.761 | 232.674 | 124.035 | 147.093 | |
Skewness | -.785 | -.947 | -.587 | -.759 | -.155 | -.665 | |
Std. Error of Skewness | .184 | .266 | .251 | .357 | .524 | .229 | |
Kurtosis | .968 | 1.650 | .082 | 1.160 | -.721 | .200 | |
Std. Error of Kurtosis | .366 | .526 | .498 | .702 | 1.014 | .455 | |
Range | 71 | 71 | 59 | 71 | 40 | 58 | |
Minimum | 28 | 28 | 40 | 28 | 59 | 40 | |
Maximum | 99 | 99 | 99 | 99 | 99 | 98 | |