Question 1

For the third quarter, the sales are 1,500 units; the seasonal index for the quarter is 1.15. What are the deseasonalized sales for the quarter?

Accepted Answer

A)  115% 
B)  15% 
C)  1,304 
D)  1,500 
A)  115% 
B)  15% 
C)  1,304 
D)  1,500

Question 2

If four seasonal indexes are reported for a time series, how often are data reported? _______________________

Accepted Answer

The answer of If four seasonal indexes are reported for...

Question 3

The table below shows the sales for a resort hotel recorded over the past year. The seasonal indexes for each quarter are also provided. To track the trend for these four quarters, use the indexes to deseasonalize the sales data   What is the deseasonalized sales value for quarter 3?

Accepted Answer

The answer of The table below shows the sales for...

Question 4

Product sales since 2001 are:   The least squares trend equation is given as
Ŷ = 100 + 28t, where t is set equal to one for 2001.
On average, how much did sales change per year from 2001 to 2009?

Accepted Answer

The answer of Product sales since 2001 are:  ...

Question 5

What is an advantage of the least squares method for determining a trend line equation?

Accepted Answer

A)  It minimizes the error sum of squares. 
B)  It is subject to human error. 
C)  Forecasts have zero error. 
D)  It is easy to calculate by hand. 
A)  It minimizes the error sum of squares. 
B)  It is subject to human error. 
C)  Forecasts have zero error. 
D)  It is easy to calculate by hand.

Question 6

Since a ski resort does most of its business in the winter, what is the major source of variation that affects sales?

Accepted Answer

A)  Secular trend 
B)  Seasonal variation 
C)  Cyclical effect 
D)  Episodic effects 
A)  Secular trend 
B)  Seasonal variation 
C)  Cyclical effect 
D)  Episodic effects

Question 7

The trend forecast equation is Ŷ = 50 + 420t. The next forecast is for period 10. The typical seasonal index for period 10 is 1.25. What are the forecast sales for period 10?

Accepted Answer

A)  4,200 
B)  4,250 
C)  5,313 
D)  1,075 
A)  4,200 
B)  4,250 
C)  5,313 
D)  1,075

Question 8

Product sales since 2001 are:   The least squares trend equation is given as
Ŷ = 100 + 28t, where t is set equal to one for 2001.
What is the 3 year moving average for 2007 to 2009?

Accepted Answer

The answer of Product sales since 2001 are:  ...

Question 9

An analysis of past seasonal fluctuations can be helpful in planning production for items such as toys, dolls, Easter eggs, and other holiday-oriented goods.

Accepted Answer

A) True 
 B)False

Question 10

Knowing the seasonal pattern in the form of indexes allows the retailer to deseasonalize sales. This is accomplished by dividing the actual sales for a month by the typical index for that month.

Accepted Answer

A) True 
 B)False

Question 11

If a trend equation is Ŷ = 15 + 75t, what is the periodic increase in the forecast? _____

Accepted Answer

The answer of If a trend equation is Ŷ =...

Question 12

What is "a" in the least squares trend equation?

Accepted Answer

A)  the intercept 
B)  the slope 
C)  the forecast 
D)  the time period 
A)  the intercept 
B)  the slope 
C)  the forecast 
D)  the time period

Question 13

What does a typical sales index of 96 for January indicate about sales? ___________________________________

Accepted Answer

4% below t

Question 14

A plastics manufacturer performed a quarterly time series analysis for demands over the last five years (periods 1 through 20). The analysis resulted in the following trend equation and seasonal indexes:
Ŷ = 920.0 + 22.6t   The seasonal indexes sum to 4.0. Therefore the indexes have been:

Accepted Answer

The answer of A plastics manufacturer performed a quarterly time...

Question 15

The merchants in Dallas, Texas, suffered flood damage in May 2003. Stores were closed for remodeling nearly two months. What is this type of variation in sales called?

Accepted Answer

A)  Secular trend 
B)  Seasonal variation 
C)  Cyclical variation 
D)  Episodic variation 
A)  Secular trend 
B)  Seasonal variation 
C)  Cyclical variation 
D)  Episodic variation

Question 16

The trend forecast equation is Ŷ = 100 + 120t. The next forecast is for period 11. The typical seasonal index for period 11 is 1.25. What are the forecast sales for period 11?

Accepted Answer

A)  1,420 
B)  1,775 
C)  1,320 
D)  1,075 
A)  1,420 
B)  1,775 
C)  1,320 
D)  1,075

Question 17

To calculate monthly typical seasonal indexes, a specific seasonal index must be computed for

Accepted Answer

A)  Every month. 
B)  Every year. 
C)  Every quarter. 
D)  Every day. 
A)  Every month. 
B)  Every year. 
C)  Every quarter. 
D)  Every day.

Question 18

In the final step, using the ratio-to-moving-average method, the total of the 12 modified means should theoretically be equal to 1,200 because the average of the 12 months is designated as 100.

Accepted Answer

A) True 
 B)False

Question 19

To calculate monthly typical seasonal indexes, the specific seasonal indexes must be averaged for

Accepted Answer

A)  Every month. 
B)  Every year. 
C)  Every quarter. 
D)  Every day. 
A)  Every month. 
B)  Every year. 
C)  Every quarter. 
D)  Every day.

Question 20

For the third quarter, the sales are 1,000 units; the seasonal index for the quarter is 1.10. What are the deseasonalized sales for the quarter?

Accepted Answer

A)  1,000. 
B)  1,100. 
C)  909. 
D)  0.90. 
A)  1,000. 
B)  1,100. 
C)  909. 
D)  0.90.

For the third quarter, the sales are 1,500 units; the seasonal index for the quarter is 1.15. What are the deseasonalized sales for the quarter?

If four seasonal indexes are reported for a time series, how often are data reported? _______________________

The table below shows the sales for a resort hotel recorded over the past year. The seasonal indexes for each quarter are also provided. To track the trend for these four quarters, use the indexes to deseasonalize the sales data What is the deseasonalized sales value for quarter 3?

Product sales since 2001 are: The least squares trend equation is given as Ŷ = 100 + 28t, where t is set equal to one for 2001. On average, how much did sales change per year from 2001 to 2009?

What is an advantage of the least squares method for determining a trend line equation?

Since a ski resort does most of its business in the winter, what is the major source of variation that affects sales?

The trend forecast equation is Ŷ = 50 + 420t. The next forecast is for period 10. The typical seasonal index for period 10 is 1.25. What are the forecast sales for period 10?

Product sales since 2001 are: The least squares trend equation is given as Ŷ = 100 + 28t, where t is set equal to one for 2001. What is the 3 year moving average for 2007 to 2009?

An analysis of past seasonal fluctuations can be helpful in planning production for items such as toys, dolls, Easter eggs, and other holiday-oriented goods.

Knowing the seasonal pattern in the form of indexes allows the retailer to deseasonalize sales. This is accomplished by dividing the actual sales for a month by the typical index for that month.

If a trend equation is Ŷ = 15 + 75t, what is the periodic increase in the forecast? _____

What is "a" in the least squares trend equation?

What does a typical sales index of 96 for January indicate about sales? ___________________________________

A plastics manufacturer performed a quarterly time series analysis for demands over the last five years (periods 1 through 20). The analysis resulted in the following trend equation and seasonal indexes: Ŷ = 920.0 + 22.6t The seasonal indexes sum to 4.0. Therefore the indexes have been:

The merchants in Dallas, Texas, suffered flood damage in May 2003. Stores were closed for remodeling nearly two months. What is this type of variation in sales called?

The trend forecast equation is Ŷ = 100 + 120t. The next forecast is for period 11. The typical seasonal index for period 11 is 1.25. What are the forecast sales for period 11?

To calculate monthly typical seasonal indexes, a specific seasonal index must be computed for

In the final step, using the ratio-to-moving-average method, the total of the 12 modified means should theoretically be equal to 1,200 because the average of the 12 months is designated as 100.

To calculate monthly typical seasonal indexes, the specific seasonal indexes must be averaged for

For the third quarter, the sales are 1,000 units; the seasonal index for the quarter is 1.10. What are the deseasonalized sales for the quarter?

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Nonparametric Methods: Goodness-Of-Fit Tests

Nonparametric Methods: Analysis of Ranked Data

Statistical Process Control and Quality Management

An Introduction to Decision Theory

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Exam 16: Time Series and Forecasting

For the third quarter, the sales are 1,500 units; the seasonal index for the quarter is 1.15. What are the deseasonalized sales for the quarter?

If four seasonal indexes are reported for a time series, how often are data reported? _______________________

The table below shows the sales for a resort hotel recorded over the past year. The seasonal indexes for each quarter are also provided. To track the trend for these four quarters, use the indexes to deseasonalize the sales data What is the deseasonalized sales value for quarter 3?

Product sales since 2001 are: The least squares trend equation is given as Ŷ = 100 + 28t, where t is set equal to one for 2001. On average, how much did sales change per year from 2001 to 2009?

What is an advantage of the least squares method for determining a trend line equation?

Since a ski resort does most of its business in the winter, what is the major source of variation that affects sales?

The trend forecast equation is Ŷ = 50 + 420t. The next forecast is for period 10. The typical seasonal index for period 10 is 1.25. What are the forecast sales for period 10?

Product sales since 2001 are: The least squares trend equation is given as Ŷ = 100 + 28t, where t is set equal to one for 2001. What is the 3 year moving average for 2007 to 2009?

An analysis of past seasonal fluctuations can be helpful in planning production for items such as toys, dolls, Easter eggs, and other holiday-oriented goods.

Knowing the seasonal pattern in the form of indexes allows the retailer to deseasonalize sales. This is accomplished by dividing the actual sales for a month by the typical index for that month.

If a trend equation is Ŷ = 15 + 75t, what is the periodic increase in the forecast? _____

What is "a" in the least squares trend equation?

What does a typical sales index of 96 for January indicate about sales? ___________________________________

A plastics manufacturer performed a quarterly time series analysis for demands over the last five years (periods 1 through 20). The analysis resulted in the following trend equation and seasonal indexes: Ŷ = 920.0 + 22.6t The seasonal indexes sum to 4.0. Therefore the indexes have been:

The merchants in Dallas, Texas, suffered flood damage in May 2003. Stores were closed for remodeling nearly two months. What is this type of variation in sales called?

The trend forecast equation is Ŷ = 100 + 120t. The next forecast is for period 11. The typical seasonal index for period 11 is 1.25. What are the forecast sales for period 11?

To calculate monthly typical seasonal indexes, a specific seasonal index must be computed for

In the final step, using the ratio-to-moving-average method, the total of the 12 modified means should theoretically be equal to 1,200 because the average of the 12 months is designated as 100.

To calculate monthly typical seasonal indexes, the specific seasonal indexes must be averaged for

For the third quarter, the sales are 1,000 units; the seasonal index for the quarter is 1.10. What are the deseasonalized sales for the quarter?

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Nonparametric Methods: Goodness-Of-Fit Tests

Nonparametric Methods: Analysis of Ranked Data

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters