寮犻闆勩�婃櫘閫氶仐浼犲銆嬭鍚庨绛旀
绗?/p>
2
绔?/p>
1
銆?/p>
AAb
b
脳
aaBb
鎴?/p>
Aabb
脳
aaBB
2
銆?/p>
AaCCRr
绗?/p>
3
绔?/p>
2
銆?/p>
(1) AB 0.45; ab 0.45; Ab 0.05; aB 0.05
(2) AB 0.05; ab 0.05; Ab 0.45; aB 0.45
3
銆?/p>
a
.
鍦?/p>
X
鏌撹壊浣撲笂
b.
鏁伴噺鏈�澶氱殑涓や釜涓轰翰鏈瀷閰嶅瓙鍗?/p>
ab
+
c,
a
+
bc
+
锛?/p>
鏁伴噺鏈�灏戠殑涓や釜涓哄弻浜ゆ崲鍨嬮厤瀛愬嵆
a
+
bc,
ab
+
c
+
锛?/p>
鐢ㄥ弻浜ゆ崲鐨勪笌浜叉湰鍨嬫瘮杈冨彲鐭?/p>
c
琚氦鎹簡锛?/p>
鍥犳杩欎釜
c
鍩哄洜浣嶄簬涓変釜鍩哄洜鐨勪腑澶紝
鍗冲熀鍥犻『搴忎负
acb
鎴?/p>
bca
Rf(a-c)=
锛?/p>
32+27+1+0
锛?/p>
/1000=6% a-c
璺濈涓?/p>
6cM
Rf(c-b)=
锛?/p>
39+30+1+0
锛?/p>
/1000=7% b-c
璺濈涓?/p>
7cM
Rf(a-b)=
锛?/p>
39+32+30+27
锛?/p>
/1000=12.8% a-b
璺濈涓?/p>
12.8cM
缁樺浘
c.
骞跺彂绯绘暟
C=
1
鈥?/p>
/6%
脳
7%=0.24
4
銆?/p>
Rf(a-b)=10% Rf(c-b)=20%
C=60%=
瀹為檯鍙屼氦鎹㈢巼
/10%
脳
20%
瀹為檯鍙屼氦鎹㈢巼
=60%
脳
10%
脳
20%=0.012
鍙屼氦鎹㈤厤瀛愮殑棰戠巼涓?/p>
0.012/2=0.006
鍗?/p>
aBc
鍙?/p>
AbC
琛ㄥ瀷鐨勯鐜囦负
0.006
a-
b
鍗曚氦鎹骇鐢熺殑閰嶅瓙棰戠巼涓?/p>
锛?/p>
0.1-0.012
锛?/p>
/2=0.044
锛?/p>
鍗?/p>
aBC
鍙?/p>
Abc
琛ㄥ瀷鐨勯鐜囦负
0.044
b-
c
鍗曚氦鎹骇鐢熺殑閰嶅瓙棰戠巼涓?/p>
锛?/p>
0.2-0.012
锛?/p>
/2=0.094
锛?/p>
鍗?/p>
abC
鍙?/p>
ABc
琛ㄥ瀷鐨勯鐜囦负
0.094
涓ょ浜叉湰鍨嬮厤瀛愰鐜囦负
锛?/p>
1-0.012-2
脳
0.044-2
脳
0.094
锛?/p>
/2=0.356
锛?/p>
ABC
鍙?/p>
abc
琛ㄥ瀷鐨勯
鐜囦负
0.356
绗?/p>
4
绔?/p>
2
銆?/p>
X
B
X
b
脳
X
B
Y X
B
X
b
Y(X
鏌撹壊浣撲笉鍒嗙
)
a
c
b
6
7