????(sampling)????????????/????(elements)???,????????????????????

1
????
2
???????

• ????(sampling)????????????/????(elements)???,?????
  ???????????????
• 1.???????????????
• 2.????????????????
• 3.???????????

3
5.1.1 ????

• ???(population)????????
• ??(random)?????,???????
• ??(sample)?????????????????
• ?????????????????
• ????(sampling bias)??????????????????
• ????(sampling error)??????????????
• ??(census)????????

4
5.1.2 ??????

• ?????????
• (1)???????????????????
• (2)?????????????

5
5.1.3 ??????????

• ???????????????????????,?????????????????1.?????
  ,??????2.????,????????????
• ???????????????????????????????????????????

6
5.1.3 ??????

• 1.???(??)????????????????
• 2.???(??)????????,??????????????,????????????????
  ??

7
5.2 ????
1.?????
2.??????
3.??????
4.??????
5.??????
6.??????
8
5.3 ?????

• 1.????
• ????????????????,????????????????????????
• 2.?????
• ???????????????,?????????????????

9
????

• 1.??????????????????,????(??????????)????????????
  ??????????
• 2.??(??)????????,??????????????,???????,?????????
  ???,?(??/???)?????????,???20??????????????,??????
  ????,???????

10

• 3.????
• 1)???,????????????????,????????????,????????
• 2)????????????????
• 3)??????????????,????????
• ????????,????????

11
????
12
????
???????????????,??????????????,??????????,??????
?,???? 1.??(?)????,????????? 2.????????(??????)??
???,????,???????????????? 3.?????????,???????
???????????
13
5.3.2 ?????

• 1.???????????????
• 2.?????????(purposive)???,????????????,??????????
  ?????
• 3.????????????????
• 4.?????????AIDS?????,??????AIDS??????????,???????
  ???,?????????,?????????

14
5.4 ????

• 1.???????????????N???,????n???????,?????
• 2.???????????????N???,????n????????,?????????????
  ????(??,???????)?

15
5.5 ?????????

• 1.????????????????
• 2.??????????????????
• 3.??????
• 4.????

16
5.6 ???????

• 1.??????????????,? ?????????,????????????????????
  
• 2.???????????????????,????????????????????????
• 3.??????????,???????,?????100?200?,????????,??200
  ???????

17
?????????

• 1.??????
• 2.???????????? (pretest) ???(pilot test)
  ???????????????
• 3.?????????????????,????????
• 4.?????????????
• 5.???????,?????

18

• 6.?????????????????????,???????????
• 7.????????????????????,???????????
• 8.???????????/?????,???????????
• 9.??????????,?????????????

19
?????????

• n(Z2 ?2)/e2
• ??????s2??,?????????n????
• ??????e??,?????????n????
• ???????????????(95 ? 99),?Z????,?????n??????Z??1
  .96?