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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.) 13.70 (8.65) 13.97 (8.76) 13.20 (8.42)
0 0 0.00% 0 0.00% 0 0.00%
1 120 5.90% 65 4.88% 54 7.80%
2 94 4.62% 65 4.88% 28 4.05%
3 88 4.33% 59 4.43% 28 4.05%
4 88 4.33% 59 4.43% 29 4.19%
5 62 3.05% 48 3.60% 14 2.02%
6 56 2.75% 40 3.00% 16 2.31%
7 61 3.00% 38 2.85% 23 3.32%
8 72 3.54% 46 3.45% 25 3.61%
9 139 6.83% 89 6.68% 50 7.23%
10 92 4.52% 54 4.05% 38 5.49%
11 63 3.10% 42 3.15% 21 3.03%
12 65 3.20% 36 2.70% 29 4.19%
13 71 3.49% 42 3.15% 28 4.05%
14 65 3.20% 42 3.15% 23 3.32%
15 68 3.34% 41 3.08% 26 3.76%
16 63 3.10% 40 3.00% 23 3.32%
17 60 2.95% 39 2.93% 21 3.03%
18 68 3.34% 43 3.23% 24 3.47%
19 80 3.93% 50 3.75% 29 4.19%
20 60 2.95% 48 3.60% 12 1.73%
21 54 2.65% 33 2.48% 21 3.03%
22 58 2.85% 44 3.30% 14 2.02%
23 40 1.97% 25 1.88% 15 2.17%
24 34 1.67% 27 2.03% 7 1.01%
25 42 2.06% 25 1.88% 16 2.31%
26 56 2.75% 40 3.00% 16 2.31%
27 52 2.56% 39 2.93% 13 1.88%
28 48 2.36% 34 2.55% 14 2.02%
29 48 2.36% 36 2.70% 12 1.73%
30 52 2.56% 32 2.40% 20 2.89%
31 15 0.74% 12 0.90% 3 0.43%
Missing 54
(2.59%)
29
(2.13%)
25
(3.49%)
Total 2088 100% 1362 100% 717 100%

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.