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标题:
求助，该怎么编，万分感谢
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作者:
shiyiming
时间:
2009-6-10 00:43
标题:
求助，该怎么编，万分感谢
一组数据
data final_exam;
input id stay age risk culture xray beds mschool region census nurses facilities;
datalines;
1 7.13 55.7 4.1 9 39.6 279 2 4 207 241 60
2 8.82 58.2 1.6 3.8 51.7 80 2 2 51 52 40
3 8.34 56.9 2.7 8.1 74 107 2 3 82 54 20
4 8.95 53.7 5.6 18.9 122.8 147 2 4 53 148 40
5 11.2 56.5 5.7 34.5 88.9 180 2 1 134 151 40
6 9.76 50.9 5.1 21.9 97 150 2 2 147 106 40
7 9.68 57.8 4.6 16.7 79 186 2 3 151 129 40
求：建立两个模型，用于预测的平均长度住院（为Y =stay）
model1 X1=age,x2=risk,and x3=facilities.
model2 x1=beds,x2=risk,and x3=facilities.
作者:
shiyiming
时间:
2009-6-10 01:14
标题:
Re: 求助，该怎么编，万分感谢
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作者:
shiyiming
时间:
2009-6-10 09:45
标题:
Re: 求助，该怎么编，万分感谢
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