
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:不
The data in the table represent the stock price for
a company at the end of each month in 2015.
(a) Construct a time-series plot and comment on
any trends.
(b) What was the percent change in the stock
price of the company from January 2015 to
December 2015?
Date
1/15
2/15
3/15
4/15
5/15
6/15
7/15
8/15
9/15
10/15
11/15
12/15
Closing Price D
28.78
28.98
31.45
35.08
31.50
31.88
30.66
31.55
32.14
36.17
36.63
37.28
(a) Which of the following is a time-series plot of the data?
OB.
Closing Price
Closing Price
40-
Andrea
Jan Jun Dec
Month
251
40-
30-
25TTT
Jan Jun
Month
Dec
Q
Closing Price
Closing Price
40-
251TT
Jan Jun
Month
Dec
Jan Jun Dec
Month
Comment on any trends. Choose the correct answer
below.
OA. The stock price generally remained the same
throughout the year.
Q
OB. The stock price generally decreased throughout
the year.
C. There was no discernible trend in the stock price
throughout the year.
D. The stock price generally increased throughout
the year.
(b) The percent change in the stock price of the company
from January 2015 to December 2015 was 30 %.
(Round to the nearest tenth as needed.)
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