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signature.day (in Demographics)

Variable Summary Undergrad Freshman Sophomore Junior Senior
Sexually active students: Undergrad Freshman Sophomore Junior Senior
Casual-sexually active students: Undergrad Freshman Sophomore Junior Senior

students (signature_day)
 All RsFemaleMale
Mean (Std. Dev.) 13.49 (8.42) 13.78 (8.59) 12.83 (8.00)
0 0 0.00% 0 0.00% 0 0.00%
1 138 4.91% 102 5.21% 36 4.25%
2 130 4.63% 81 4.14% 49 5.79%
3 112 3.99% 74 3.78% 37 4.37%
4 110 3.92% 80 4.09% 30 3.54%
5 68 2.42% 56 2.86% 12 1.42%
6 106 3.77% 70 3.58% 36 4.25%
7 65 2.31% 40 2.04% 25 2.95%
8 98 3.49% 68 3.47% 30 3.54%
9 208 7.41% 143 7.30% 65 7.67%
10 176 6.27% 114 5.82% 62 7.32%
11 152 5.41% 98 5.01% 54 6.38%
12 89 3.17% 62 3.17% 27 3.19%
13 156 5.56% 112 5.72% 43 5.08%
14 78 2.78% 42 2.15% 36 4.25%
15 86 3.06% 55 2.81% 31 3.66%
16 83 2.96% 55 2.81% 28 3.31%
17 96 3.42% 71 3.63% 25 2.95%
18 82 2.92% 61 3.12% 21 2.48%
19 88 3.13% 53 2.71% 34 4.01%
20 49 1.75% 35 1.79% 14 1.65%
21 41 1.46% 35 1.79% 6 0.71%
22 49 1.75% 35 1.79% 14 1.65%
23 57 2.03% 41 2.09% 16 1.89%
24 39 1.39% 30 1.53% 9 1.06%
25 81 2.88% 66 3.37% 15 1.77%
26 86 3.06% 70 3.58% 16 1.89%
27 67 2.39% 43 2.20% 24 2.83%
28 71 2.53% 58 2.96% 13 1.53%
29 51 1.82% 36 1.84% 15 1.77%
30 78 2.78% 59 3.01% 19 2.24%
31 18 0.64% 13 0.66% 5 0.59%
Missing 42
(1.47%)
21
(1.06%)
21
(2.42%)
Total 2850 100% 1979 100% 868 100%

These tables reflect only undergraduates attending 4-year colleges who are of normative age -- 18, 19, 20, 21, or 22, +/- 1, for freshman, sophomores, juniors, and seniors, respectively.