CHAPTER 20
TIME-SERIES ANALYSIS AND
FORECASTING
SECTIONS 1 - 2
CHAPTER 20
TIME-SERIES ANALYSIS AND FORECASTING
SECTIONS 1 - 2
MULTIPLE CHOICE QUESTIONS
In the following multiple-choice questions, please circle the correct answer.
1) A time series is:
a. a set of measurements on a variable collected at the same time or approximately the
same period of time.
b. a set of measurements on a variable taken over some time period in sequential order
c. a model that attempts to analyze the relationship between a dependent variable and
one or more independent variables
d. a model that attempts to forecast the future value of a variable
ANSWER: b
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2) The time series component that reflects a long-term, relatively smooth pattern or direction
exhibited by a time series over a long time period (more than one year) is called:
a. long – term trend
b. cyclical variation
c. seasonal variation
d. random variation
ANSWER: a
3) The time series component that reflects variability over short repetitive time periods and
has duration of less than one year is called:
a. long – term trend
b. cyclical variation
c. seasonal variation
, CHAPTER 20
TIME-SERIES ANALYSIS AND
FORECASTING
SECTIONS 1 - 2
d. random variation
ANSWER: c
4) The time series component that reflects the irregular changes in a time series that are not
caused by any other component, and tends to hide the existence of the other more
predictable components, is called:
a. long – term trend
b. cyclical variation
c. seasonal variation
d. random variation
ANSWER: d
5) Which of the four- time series component is more likely to exhibit the changes in stock
market prices at particular times during the course of one day?
a. Long – term trend
b. Cyclical variation
c. Seasonal variation
d. Random variation
ANSWER: c
6) The term “seasonal variation” may refer to:
a. the four traditional seasons
b. systematic patterns that occur during the period of one week
c. systematic patterns that occur over the course of one day
d. All of the above
ANSWER: d
, 4 Chapter Twenty
7) Which of the four time series components is more likely to exhibit the relative steady
growth of the population of Egypt from 1964 to 2004?
a. Long – term trend
b. Cyclical variation
c. Seasonal variation
d. Random variation
ANSWER: a
8) The time series component that reflects a wavelike pattern describing a long-term trend
that is generally apparent over a number of years is called:
a. long – term trend
b. cyclical variation
c. seasonal variation
d. random variation
ANSWER: b
TIME-SERIES ANALYSIS AND
FORECASTING
SECTIONS 1 - 2
CHAPTER 20
TIME-SERIES ANALYSIS AND FORECASTING
SECTIONS 1 - 2
MULTIPLE CHOICE QUESTIONS
In the following multiple-choice questions, please circle the correct answer.
1) A time series is:
a. a set of measurements on a variable collected at the same time or approximately the
same period of time.
b. a set of measurements on a variable taken over some time period in sequential order
c. a model that attempts to analyze the relationship between a dependent variable and
one or more independent variables
d. a model that attempts to forecast the future value of a variable
ANSWER: b
,2 Chapter Twenty
2) The time series component that reflects a long-term, relatively smooth pattern or direction
exhibited by a time series over a long time period (more than one year) is called:
a. long – term trend
b. cyclical variation
c. seasonal variation
d. random variation
ANSWER: a
3) The time series component that reflects variability over short repetitive time periods and
has duration of less than one year is called:
a. long – term trend
b. cyclical variation
c. seasonal variation
, CHAPTER 20
TIME-SERIES ANALYSIS AND
FORECASTING
SECTIONS 1 - 2
d. random variation
ANSWER: c
4) The time series component that reflects the irregular changes in a time series that are not
caused by any other component, and tends to hide the existence of the other more
predictable components, is called:
a. long – term trend
b. cyclical variation
c. seasonal variation
d. random variation
ANSWER: d
5) Which of the four- time series component is more likely to exhibit the changes in stock
market prices at particular times during the course of one day?
a. Long – term trend
b. Cyclical variation
c. Seasonal variation
d. Random variation
ANSWER: c
6) The term “seasonal variation” may refer to:
a. the four traditional seasons
b. systematic patterns that occur during the period of one week
c. systematic patterns that occur over the course of one day
d. All of the above
ANSWER: d
, 4 Chapter Twenty
7) Which of the four time series components is more likely to exhibit the relative steady
growth of the population of Egypt from 1964 to 2004?
a. Long – term trend
b. Cyclical variation
c. Seasonal variation
d. Random variation
ANSWER: a
8) The time series component that reflects a wavelike pattern describing a long-term trend
that is generally apparent over a number of years is called:
a. long – term trend
b. cyclical variation
c. seasonal variation
d. random variation
ANSWER: b
