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154 KKU Science Journal Volume 39 Number 1 <strong>Review</strong><br />

<br />

<br />

<br />

<br />

1. <br />

<br />

y1<br />

<br />

y2<br />

<br />

y<br />

(X X )<br />

(x X min ) min<br />

y<br />

(XX X)<br />

(x XminX)<br />

min<br />

(20)<br />

(21)<br />

2. <br />

3. <br />

Mohanty and Sahoo (1995) Bedi (1996) Kadilar and Cingi (2006)<br />

<br />

1<br />

<br />

2<br />

<br />

MSE( ˆ 1 ) MSE(ˆ<br />

2 )<br />

4. <br />

<br />

<br />

1. <br />

<br />

y1<br />

<br />

y2<br />

<br />

y<br />

(X X )<br />

(x X min ) min<br />

y<br />

(XX X)<br />

(xXminX)<br />

min<br />

c,d <br />

h(x, y) <br />

y1<br />

h(x, y) , Y h(X, Y) <br />

h(c, d) <br />

h(X, Y) <br />

(x X)<br />

<br />

<br />

c<br />

X,Y <br />

h(c, d)<br />

<br />

<br />

(yY)<br />

<br />

<br />

d<br />

X,Y<br />

<br />

(22)

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