[问答] 总人数N不对~帮忙看下code吧 [推广有奖]

很长，不好意思。不知道为什么我用的SAS 9.2不能import excel data
所以我只好手动输入。问题是我仔细看过excel，我从第2行粘贴到第150行，有149个数。而且我确认过haircut里没有空的数据。所以不知道为什么最后得到female 57和male 91.而且我第一次run的时候，female是58.但是我第二次run的时候就总是57，再也变不成58了。。不知道为什么呀。。请大家看下我的code。。
Data Hair;
Input Gender $ Haircut Myage Studytime;
cards;
FEMALE 35 43 2.5
MALE 15 44 1
MALE 13 40 1
MALE 35 45 1.5
FEMALE 35 37 2
MALE 15 54 1.5
MALE 8 45 1
MALE 7 44 1
MALE 0 47 1
FEMALE 18 37 1.5
MALE 10 46 1
MALE 0 48 2
MALE 12 41 2
MALE 10 42 1
FEMALE 15 42 3
MALE 12 48 1
FEMALE 22 48 2
FEMALE 37 35 1
MALE 0 35 2
MALE 10 48 1
FEMALE 12.99 47 3.5
FEMALE 23 48 2
FEMALE 36 46 2
FEMALE 28 41 1
FEMALE 17 49 1
FEMALE 20 29 1
FEMALE 80 40 1.5
MALE 11 45 1
MALE 14 44 0.5
FEMALE 25 46 5
MALE 0 47 1
FEMALE 43 49 0.5
MALE 12 47 2
FEMALE 25 32 2
MALE 10 39 1.5
MALE 34 47 0.5
FEMALE 45 51 0.5
MALE 15 48 0.5
FEMALE 23 46 1
MALE 12 42 2
MALE 10 40 2
FEMALE 15 45 1
FEMALE 14 43 3
FEMALE 0 40 1
FEMALE 26 45 1
FEMALE 60 45 2
MALE 16 50 0.5
FEMALE 50 42 0.5
FEMALE 145 37 1.25
FEMALE 25 43 1
MALE 9 42 1
FEMALE 30 51 1.5
MALE 10 45 0.5
MALE 12 47 1
MALE 20 45 1.25
MALE 0 35 4
MALE 0 44 2
MALE 22 43 2
FEMALE 30 50 1
MALE 10 40 1
MALE 9 40 1
FEMALE 35 45 1
MALE 12 43 1
MALE 4 38 2
MALE 10 53 1
FEMALE 20 48 2
FEMALE 0 43 1
MALE 15 47 1
MALE 0 47 25
MALE 5 50 1
MALE 0 40 1
FEMALE 60 45 2
MALE 10 45 30
MALE 12 43 0
MALE 13.95 50 0.5
FEMALE 15 48 1
MALE 0 41 2
FEMALE 40 43 0.5
MALE 0 38 1.5
FEMALE 20 50 1
MALE 15 53 0.5
MALE 14 54 0.5
FEMALE 29 50 2
FEMALE 15 40 2
MALE 12 50 0.5
MALE 15 43 2
MALE 14 45 1.5
FEMALE 15 52 1.5
MALE 15 45 2
MALE 15 47 1.5
FEMALE 38 48 1.5
FEMALE 9 47 1
MALE 16 45 4
MALE 16 45 4
MALE 15 55 3
FEMALE 11.95 52
FEMALE 45 45 5
FEMALE 0 47 2
MALE 14 48 3
MALE 10 53 4
MALE 13 41 4
MALE 17 47 1
MALE 14 47 2
MALE 12 45 0.5
MALE 14 42 1
FEMALE 42 48 1
MALE 15 48 1
MALE 9 45 1
MALE 0 40 1
FEMALE 46 48 4
FEMALE 40 48 1.5
MALE 14 45 1
MALE 0 46 1
MALE 14 49 1
MALE 19.75 42 12
FEMALE 120 52 1
MALE 10 45 3
FEMALE 23 51 6
MALE 30 47 1
MALE 15 45 2
MALE 11.99 40 2
FEMALE 0 51 2
FEMALE 21.5 52 1
MALE 15 35 1
MALE 0 47 1
MALE 12 50 2
MALE 15 54 0.5
MALE 13 45 1.5
MALE 12 50 1
MALE 15 49 0.5
MALE 7 47 3
MALE 13 43 2
MALE 12 49 2
MALE 5.5 45 1
MALE 22 52 0.5
FEMALE 34 43 1
FEMALE 50 40 1
MALE 17 45 0.5
MALE 0 42 3
FEMALE 25 53 1
FEMALE 9 48 1
FEMALE 0 29 2
MALE 14 43 4
MALE 12 45 2
FEMALE 8 48 1
FEMALE 55 48 1
FEMALE 25 52 1
MALE 15 47 1
MALE 11 45 1
;
TITLE 'Haircut Data';
PROC TTEST DATA=Hair ALPHA=0.01;
CLASS Gender;
VAR Haircut;
RUN;quit;