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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.) 14.39 (8.53) 14.89 (8.44) 13.24 (8.62)
0 0 0.00% 0 0.00% 0 0.00%
1 130 4.73% 85 4.44% 45 5.44%
2 111 4.04% 65 3.40% 45 5.44%
3 131 4.77% 79 4.13% 52 6.29%
4 114 4.15% 67 3.50% 47 5.68%
5 94 3.42% 63 3.29% 31 3.75%
6 58 2.11% 41 2.14% 16 1.93%
7 71 2.59% 47 2.46% 24 2.90%
8 100 3.64% 76 3.97% 24 2.90%
9 134 4.88% 92 4.81% 42 5.08%
10 101 3.68% 70 3.66% 31 3.75%
11 68 2.48% 39 2.04% 29 3.51%
12 73 2.66% 48 2.51% 25 3.02%
13 87 3.17% 55 2.87% 32 3.87%
14 101 3.68% 70 3.66% 31 3.75%
15 93 3.39% 69 3.61% 24 2.90%
16 99 3.61% 65 3.40% 34 4.11%
17 108 3.93% 81 4.23% 27 3.26%
18 96 3.50% 78 4.08% 18 2.18%
19 148 5.39% 116 6.06% 32 3.87%
20 115 4.19% 89 4.65% 25 3.02%
21 84 3.06% 62 3.24% 22 2.66%
22 77 2.80% 56 2.93% 21 2.54%
23 69 2.51% 49 2.56% 20 2.42%
24 64 2.33% 49 2.56% 14 1.69%
25 61 2.22% 49 2.56% 12 1.45%
26 81 2.95% 54 2.82% 26 3.14%
27 68 2.48% 46 2.40% 22 2.66%
28 73 2.66% 52 2.72% 21 2.54%
29 53 1.93% 33 1.72% 20 2.42%
30 69 2.51% 55 2.87% 14 1.69%
31 15 0.55% 14 0.73% 1 0.12%
Missing 52
(1.86%)
30
(1.54%)
22
(2.59%)
Total 2798 100% 1944 100% 849 100%

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.