??secant line

1
????? ?????

• ??secant line
• ?????
• ??tangent line

2
?? ???????

• ???
• ???
• ???
• ???
• ????
• ??????

3
???????????
4
?????????????
5
Types of Censoring data
6
????????? 1????
7
????????? 2????
8
????????? 3????
9
????????? 4????
10
????????? 5????
11
???????????????
12
???????????
13
???????????????1
14
???????????????2
15
???????????
16
NCSS????????Borghi, NEJM2002.