Question 1

The method of moving averages is used

Accepted Answer

A)  to plot a series. 
B)  to exponentiate a series. 
C)  to smooth a series. 
D)  in regression analysis. 
A)  to plot a series. 
B)  to exponentiate a series. 
C)  to smooth a series. 
D)  in regression analysis.

Question 2

SCENARIO 16-3  
-Referring to Scenario 16-3, if a three-month moving average is used to smooth this series,
How many values would it have?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  5 
A)  2 
B)  3 
C)  4 
D)  5

Question 3

Accepted Answer

The answer of  ...

Question 4

SCENARIO 16-1  
-Referring to Scenario 16-1, does there appear to be a relationship between year and the
Number of cases of wine sold?

Accepted Answer

A)  No, there appears to be no relationship between the year and the number of cases of wine sold by the vintner. 
B)  Yes, there appears to be a slight negative linear relationship between the year and the number of cases of wine sold by the vintner. 
C)  Yes, there appears to be a slight positive relationship between the year and the number of cases of wine sold by the vintner. 
D)  Yes, there appears to be a negative nonlinear relationship between the year and the number of cases of wine sold by the vintner. 
A)  No, there appears to be no relationship between the year and the number of cases of wine sold by the vintner. 
B)  Yes, there appears to be a slight negative linear relationship between the year and the number of cases of wine sold by the vintner. 
C)  Yes, there appears to be a slight positive relationship between the year and the number of cases of wine sold by the vintner. 
D)  Yes, there appears to be a negative nonlinear relationship between the year and the number of cases of wine sold by the vintner.

Question 5

Which of the following is not an advantage of exponential smoothing?

Accepted Answer

A)  It enables you to perform one-period ahead forecasting. 
B)  It enables you to perform more than one-period ahead forecasting. 
C)  It enables you to smooth out seasonal components. 
D)  It enables you to smooth out cyclical components. 
A)  It enables you to perform one-period ahead forecasting. 
B)  It enables you to perform more than one-period ahead forecasting. 
C)  It enables you to smooth out seasonal components. 
D)  It enables you to smooth out cyclical components.

Question 6

True or False: The principle of parsimony indicates that the simplest model that gets the job
done adequately should be used.

Accepted Answer

A) True 
 B)False

Question 7

SCENARIO 16-5
The number of passengers arriving at San Francisco on the Amtrak cross-country express on 6
successive Mondays were: 60, 72, 96, 84, 36, and 48.
-Referring to Scenario 16-5, the number of arrivals will be smoothed with a 3-term moving
average.There will be a total of __________ smoothed values.

Accepted Answer

The answer of SCENARIO 16-5
The number of passengers arriving at...

Question 8

When using the exponentially weighted moving average for purposes of forecasting rather
Than smoothing,

Accepted Answer

A)  the previous smoothed value becomes the forecast. 
B)  the current smoothed value becomes the forecast. 
C)  the next smoothed value becomes the forecast. 
D)  None of the above. 
A)  the previous smoothed value becomes the forecast. 
B)  the current smoothed value becomes the forecast. 
C)  the next smoothed value becomes the forecast. 
D)  None of the above.

Question 9

SCENARIO 16-3  
-Referring to Scenario 16-3, if this series is smoothed using exponential smoothing with a
Smoothing constant of 1/3, what would be the second value?

Accepted Answer

A)  39 
B)  42 
C)  45 
D)  53 
A)  39 
B)  42 
C)  45 
D)  53

Question 10

True or False: The MAD is a measure of the mean of the absolute discrepancies between the
actual and the fitted values in a given time series.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following methods should not be used for short-term forecasts into the future?

Accepted Answer

A)  Exponential smoothing 
B)  Moving averages 
C)  Linear trend model 
D)  Autoregressive modeling 
A)  Exponential smoothing 
B)  Moving averages 
C)  Linear trend model 
D)  Autoregressive modeling

Question 12

True or False: Given a data set with 15 yearly observations, a 3-year moving average will
have fewer observations than a 5-year moving average.

Accepted Answer

A) True 
 B)False

Question 13

SCENARIO 16-3  
-Referring to Scenario 16-3, if this series is smoothed using exponential smoothing with a
Smoothing constant of 1/3, what would be the first value?

Accepted Answer

A)  36 
B)  39 
C)  42 
D)  45 
A)  36 
B)  39 
C)  42 
D)  45

Question 14

SCENARIO 16-3  
-Referring to Scenario 16-3, if this series is smoothed using exponential smoothing with a
Smoothing constant of 1/3, what would be the third value?

Accepted Answer

A)  53 
B)  65.33 
C)  68 
D)  81 
A)  53 
B)  65.33 
C)  68 
D)  81

Question 15

SCENARIO 16-2  
-Referring to Scenario 16-2, set up a scatter plot (i.e., time-series plot)with months on the
horizontal X-axis.

Accepted Answer

The answer of SCENARIO 16-2  
-Referring to Scenario 16-2,...

Question 16

You need to decide whether you should invest in a particular stock.You would like to invest
If the price is likely to rise in the long run.You have data on the daily mean price of this
Stock over the past 12 months.Your best action is to

Accepted Answer

A)  compute moving averages 
B)  perform exponential smoothing 
C)  estimate a least square trend model 
D)  compute the MAD statistic 
A)  compute moving averages 
B)  perform exponential smoothing 
C)  estimate a least square trend model 
D)  compute the MAD statistic

Question 17

SCENARIO 16-14  
-Referring to Scenario 16-14, the best interpretation of the coefficient of X (0.117)in the
Regression equation is:

Accepted Answer

A)  the quarterly compound growth rate in contracts is around 30.92%. 
B)  the annually compound growth rate in contracts is around 30.92%. 
C)  the quarterly compound growth rate in contracts is around 11.7%. 
D)  the annually compound growth rate in contracts is around 11.7%. 
A)  the quarterly compound growth rate in contracts is around 30.92%. 
B)  the annually compound growth rate in contracts is around 30.92%. 
C)  the quarterly compound growth rate in contracts is around 11.7%. 
D)  the annually compound growth rate in contracts is around 11.7%.

Question 18

SCENARIO 16-14  
-Referring to Scenario 16-14, to obtain a forecast for the fourth quarter of 2014 using the
Model, which of the following sets of values should be used in the regression equation?

Accepted Answer

Question 19

SCENARIO 16-5
The number of passengers arriving at San Francisco on the Amtrak cross-country express on 6
successive Mondays were: 60, 72, 96, 84, 36, and 48.
-Referring to Scenario 16-5, the number of arrivals will be smoothed with a 3-term moving
average.The first smoothed value will be __________.

Accepted Answer

The answer of SCENARIO 16-5
The number of passengers arriving at...

Question 20

The annual multiplicative time-series model does not possess _______ component.

Accepted Answer

A)  a trend 
B)  a cyclical 
C)  an irregular 
D)  a seasonal 
A)  a trend 
B)  a cyclical 
C)  an irregular 
D)  a seasonal

The method of moving averages is used

SCENARIO 16-3 -Referring to Scenario 16-3, if a three-month moving average is used to smooth this series, How many values would it have?

SCENARIO 16-1 -Referring to Scenario 16-1, does there appear to be a relationship between year and the Number of cases of wine sold?

Which of the following is not an advantage of exponential smoothing?

True or False: The principle of parsimony indicates that the simplest model that gets the job done adequately should be used.

When using the exponentially weighted moving average for purposes of forecasting rather Than smoothing,

SCENARIO 16-3 -Referring to Scenario 16-3, if this series is smoothed using exponential smoothing with a Smoothing constant of 1/3, what would be the second value?

True or False: The MAD is a measure of the mean of the absolute discrepancies between the actual and the fitted values in a given time series.

Which of the following methods should not be used for short-term forecasts into the future?

True or False: Given a data set with 15 yearly observations, a 3-year moving average will have fewer observations than a 5-year moving average.

SCENARIO 16-3 -Referring to Scenario 16-3, if this series is smoothed using exponential smoothing with a Smoothing constant of 1/3, what would be the first value?

SCENARIO 16-3 -Referring to Scenario 16-3, if this series is smoothed using exponential smoothing with a Smoothing constant of 1/3, what would be the third value?

SCENARIO 16-2 -Referring to Scenario 16-2, set up a scatter plot (i.e., time-series plot)with months on the horizontal X-axis.

You need to decide whether you should invest in a particular stock.You would like to invest If the price is likely to rise in the long run.You have data on the daily mean price of this Stock over the past 12 months.Your best action is to

SCENARIO 16-14 -Referring to Scenario 16-14, the best interpretation of the coefficient of X (0.117)in the Regression equation is:

SCENARIO 16-14 -Referring to Scenario 16-14, to obtain a forecast for the fourth quarter of 2014 using the Model, which of the following sets of values should be used in the regression equation?

The annual multiplicative time-series model does not possess _______ component.

Defining and Collecting Data

Organizing and Visualizing

Numerical Descriptive Measures

Basic Probability

Discrete Probability Distributions

Conthe Tinuonormausl Disdis Tributionstribution and Other

Sampling Distributions

Confidence Interval Estimation

Fundamentals of Hypothesis Testing: One-Sample Tests

Two-Sample Tests

Analysis of Variance

Chi-Square and Nonparametric

Simple Linear Regression

Introduction to Multiple

Multiple Regression

Business Analytics

A Roadmap for Analyzing Data

Statistical Applications in Quality Management

Decision Making

Filters

Exam 16: Time-Series Forecasting

The method of moving averages is used

SCENARIO 16-3 -Referring to Scenario 16-3, if a three-month moving average is used to smooth this series, How many values would it have?

SCENARIO 16-1 -Referring to Scenario 16-1, does there appear to be a relationship between year and the Number of cases of wine sold?

Which of the following is not an advantage of exponential smoothing?

True or False: The principle of parsimony indicates that the simplest model that gets the job done adequately should be used.

When using the exponentially weighted moving average for purposes of forecasting rather Than smoothing,

SCENARIO 16-3 -Referring to Scenario 16-3, if this series is smoothed using exponential smoothing with a Smoothing constant of 1/3, what would be the second value?

True or False: The MAD is a measure of the mean of the absolute discrepancies between the actual and the fitted values in a given time series.

Which of the following methods should not be used for short-term forecasts into the future?

True or False: Given a data set with 15 yearly observations, a 3-year moving average will have fewer observations than a 5-year moving average.

SCENARIO 16-3 -Referring to Scenario 16-3, if this series is smoothed using exponential smoothing with a Smoothing constant of 1/3, what would be the first value?

SCENARIO 16-3 -Referring to Scenario 16-3, if this series is smoothed using exponential smoothing with a Smoothing constant of 1/3, what would be the third value?

SCENARIO 16-2 -Referring to Scenario 16-2, set up a scatter plot (i.e., time-series plot)with months on the horizontal X-axis.

You need to decide whether you should invest in a particular stock.You would like to invest If the price is likely to rise in the long run.You have data on the daily mean price of this Stock over the past 12 months.Your best action is to

SCENARIO 16-14 -Referring to Scenario 16-14, the best interpretation of the coefficient of X (0.117)in the Regression equation is:

SCENARIO 16-14 -Referring to Scenario 16-14, to obtain a forecast for the fourth quarter of 2014 using the Model, which of the following sets of values should be used in the regression equation?

The annual multiplicative time-series model does not possess _______ component.

Defining and Collecting Data

Organizing and Visualizing

Numerical Descriptive Measures

Basic Probability

Discrete Probability Distributions

Conthe Tinuonormausl Disdis Tributionstribution and Other

Sampling Distributions

Confidence Interval Estimation

Fundamentals of Hypothesis Testing: One-Sample Tests

Two-Sample Tests

Analysis of Variance

Chi-Square and Nonparametric

Simple Linear Regression

Introduction to Multiple

Multiple Regression

Business Analytics

A Roadmap for Analyzing Data

Statistical Applications in Quality Management

Decision Making

Filters