Answer Key for Problem Set 3
1. (1)
n
f (Yi - b X i )
2
i =1
n
df
= -2 (Yi - b X i ) X i = 0 b =
db
i =1
X iYi
i
X i2
i
X Y
X
i i
(2)
b =
i
2
i
i
X i Yi
E ( b ) = E i
2
Xi
i
=
X E (Y ) X bX
=
Answer Key for Problem Set 9
1. The estimated result is as follows:
Dependent Variable: COST
Method: Least Squares
Sample: 1 145
Included observations: 145
Variable
Coefficient
Std. Error
t-Statisti
Answer Key for Problem Set 4
n
ei
1. Note that R 2 = 1 -
n
(Y - Y )
2
i =1
n
(Y
i
2
i
=
-Y )
2
i =1
i =1
n
.
(Y
i
-Y )
2
i =1
Since Yi - Y = b2 ( X i - X ) ,
b2
2
R2 =
n
(X
i =1
n
(Y
i
- X)
2
Answer Key for Problem Set 2
1.
1 8
1 8
(1) GPAi = 3.2125 = GPA , STUDYi = 25.875 = STUDY ,
8 i =1
8 i =1
8
8
2
( STUDYi - STUDY ) = 56.875 ,
i =1
(STUDY
i
- STUDY )(GPAi - GPA) = 5.8125
i =1
. b
Art at Court-Objects
Green ware jar, 6th-7thc. CE
Illustration 23
Ru ware,
from textbook
Green-glazed vases from Longquan, Zhejiang 13thc. CE
Illustration 31
from textbook
Porcelain bowl, Ming dynasty
English Program in Chinese Culture: Art of China
Jane C. Ju
History Department
Rm. 531, Ji-tao Bldg., Tel. 2938-7615
Email: [email protected]
The purpose of the course is to teach students about C
Art at Court-Paintings 2
Illustration 28
from textbook
Yuan dynasty, Hunting Falcon
attacking a Swan, an
anonymous hanging scroll
Yuan dynasty (14th CE)
Auspicious Grain
Khubilai Khan Hunting, 1280
Li