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Quantitative Methods for Finance

Practice Questions for Lecture 4

1. The prices of a stock are given in the table on the right. (a) What is R2 ?

(b) What is R) ?

(c) What is r3 ?

2. The prices of a stock are given in the table on the right. Calculate (a) R2, R3, and R4 .

(b) R R and R3)

(c) r3 and r5

(d) r3(2) , r4(3) , and r3(3)

3. The prices of a stock in months 1-5 are given below. Please compute the period net, gross and logarithmic returns and fill in the blanks in the table.

t

Pt

1

51

2

56

3

53

4

58

 

corresponding single-period, multi-

t

Pt

Rt

1+Rt

1 + Rt(3)

rt

r(3)

1

200

×

×

×

×

×

2

192

 

 

×

 

×

3

198

 

 

×

 

×

4

206

 

 

 

 

 

5

210

 

 

 

 

 

4. True or False questions

(1) The k-period log return is the product of k terms of single-period log returns.

(2) Log returns are also called continuously-compounded returns.

(3) Random walks imply that stock prices are predictable.

(4) The continuous-time version of a random walk is a Brownian motion.

1(a) 9.80%

1(b) 13.73%

1(c) -5.51%

2(a) 2.78%, -4. 17%, -2.78%

2(b) -4. 17%, -2.78%, -4.05%

2(c) -7.00%, 1.42%

2(d) -4.26%, -2.82%, - 1.40%

3. Do it by yourself

4. (2)