Question 1

What method is used to determine the linear equation when the best fitting straight line is required? _____________________

Accepted Answer

The answer of What method is used to determine the...

Question 2

What transformation should be used for a time series that increases by equal percentages over time? __________________

Accepted Answer

The answer of What transformation should be used for a...

Question 3

For quarterly seasonal indexes, the total of the adjusted quarterly indexes will equal

Accepted Answer

A)  4.0. 
B)  1.0. 
C)  100% 
D)  a variable. 
A)  4.0. 
B)  1.0. 
C)  100% 
D)  a variable.

Question 4

Using the following time series data,   What is the four-quarter moving average for 2009?

Accepted Answer

The answer of Using the following time series data, ...

Question 5

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 were the predicted sales for 2009?

Accepted Answer

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

Question 6

In a linear trend equation, which variable represents the average change in the dependent variable for every unit change in time?

Accepted Answer

A)  a 
B)  b 
C)  t 
D)  Ŷ 
A)  a 
B)  b 
C)  t 
D)  Ŷ

Question 7

The table below shows the sales for a plastics manufacturer 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 8

One component of a time series is cyclical variation. An example of cyclical variation is the business cycle that consists of periods of prosperity followed by periods of recession, depression, and recovery.

Accepted Answer

A) True 
 B)False

Question 9

For an annual time series extending from 2000 through 2010, how many years would be lost in a three year moving average?

Accepted Answer

A)  2 at the start and 1 at the end 
B)  1 at the start and 1 at the end 
C)  2 at the start and 0 at the end 
D)  0 at the start and 2 at the end 
A)  2 at the start and 1 at the end 
B)  1 at the start and 1 at the end 
C)  2 at the start and 0 at the end 
D)  0 at the start and 2 at the end

Question 10

The forecast for the third quarter is 1,000 units; the seasonal index for the quarter is 0.85. What are the seasonally adjusted sales for the quarter?

Accepted Answer

A)  1,085 
B)  850 
C)  985 
D)  1,015 
A)  1,085 
B)  850 
C)  985 
D)  1,015

Question 11

Even if it is zero, every time series has this component. Name it. __________________

Accepted Answer

The answer of Even if it is zero, every time...

Question 12

For the third quarter, the sales are 2,000 units; the seasonal index for the quarter is 1.15. What are the deseasonalized sales for the quarter?

Accepted Answer

A)  1,739 
B)  2,015 
C)  2,115 
D)  115 
A)  1,739 
B)  2,015 
C)  2,115 
D)  115

Question 13

To calculate monthly typical seasonal indexes, after computing the ratio-to-moving averages, the averages must be:

Accepted Answer

A)  Divided by twelve. 
B)  Multiplied by twelve. 
C)  Summed and divided by two. 
D)  Summed and divided by twelve. 
A)  Divided by twelve. 
B)  Multiplied by twelve. 
C)  Summed and divided by two. 
D)  Summed and divided by twelve.

Question 14

The following linear trend equation was developed for the annual sales of the Jordan Manufacturing Company.   = 500 + 60t (in $thousands). At what rate are sales increasing?

Accepted Answer

A)  $60,000 per year 
B)  $6,000 per month 
C)  $500,000 per year 
D)  $6,000 per year 
A)  $60,000 per year 
B)  $6,000 per month 
C)  $500,000 per year 
D)  $6,000 per year

Question 15

A useful method for eliminating fluctuations in a time series is computing a ______.

Accepted Answer

The answer of A useful method for eliminating fluctuations in...

Question 16

The Durbin-Watson statistic is based on the

Accepted Answer

A)  differences between successive residuals in a time series. 
B)  differences between successive sales in a time series. 
C)  differences between typical sales indexes. 
D)  differences in time periods. 
A)  differences between successive residuals in a time series. 
B)  differences between successive sales in a time series. 
C)  differences between typical sales indexes. 
D)  differences in time periods.

Question 17

What type of analysis predicts the future on the basis of past data? ______________________________

Accepted Answer

time serie

Question 18

Given a linear time series trend, Ŷ = 5.2 + 3.1t, what is the forecast for 2010 if the time series started in 2003?

Accepted Answer

A)  23.8 
B)  26.9 
C)  30.0 
D)  21.7 
A)  23.8 
B)  26.9 
C)  30.0 
D)  21.7

Question 19

For a straight trend line, what represents the amount of change in Ŷ for each increase of one unit in t? _________________________

Accepted Answer

The answer of For a straight trend line, what represents...

Question 20

What is the correct order of events in a typical business cycle?

Accepted Answer

A)  Prosperity, recession, depression and recovery 
B)  Depression, recovery, recession and prosperity 
C)  Recovery, depression, prosperity and recession 
D)  Recession, recovery, prosperity and depression 
A)  Prosperity, recession, depression and recovery 
B)  Depression, recovery, recession and prosperity 
C)  Recovery, depression, prosperity and recession 
D)  Recession, recovery, prosperity and depression

What method is used to determine the linear equation when the best fitting straight line is required? _____________________

What transformation should be used for a time series that increases by equal percentages over time? __________________

For quarterly seasonal indexes, the total of the adjusted quarterly indexes will equal

Using the following time series data, What is the four-quarter moving average for 2009?

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 were the predicted sales for 2009?

In a linear trend equation, which variable represents the average change in the dependent variable for every unit change in time?

The table below shows the sales for a plastics manufacturer 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?

One component of a time series is cyclical variation. An example of cyclical variation is the business cycle that consists of periods of prosperity followed by periods of recession, depression, and recovery.

For an annual time series extending from 2000 through 2010, how many years would be lost in a three year moving average?

The forecast for the third quarter is 1,000 units; the seasonal index for the quarter is 0.85. What are the seasonally adjusted sales for the quarter?

Even if it is zero, every time series has this component. Name it. __________________

For the third quarter, the sales are 2,000 units; the seasonal index for the quarter is 1.15. What are the deseasonalized sales for the quarter?

To calculate monthly typical seasonal indexes, after computing the ratio-to-moving averages, the averages must be:

The following linear trend equation was developed for the annual sales of the Jordan Manufacturing Company. = 500 + 60t (in $thousands). At what rate are sales increasing?

A useful method for eliminating fluctuations in a time series is computing a ______.

The Durbin-Watson statistic is based on the

What type of analysis predicts the future on the basis of past data? ______________________________

Given a linear time series trend, Ŷ = 5.2 + 3.1t, what is the forecast for 2010 if the time series started in 2003?

For a straight trend line, what represents the amount of change in Ŷ for each increase of one unit in t? _________________________

What is the correct order of events in a typical business cycle?

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

Exam 16: Time Series and Forecasting

What method is used to determine the linear equation when the best fitting straight line is required? _____________________

What transformation should be used for a time series that increases by equal percentages over time? __________________

For quarterly seasonal indexes, the total of the adjusted quarterly indexes will equal

Using the following time series data, What is the four-quarter moving average for 2009?

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 were the predicted sales for 2009?

In a linear trend equation, which variable represents the average change in the dependent variable for every unit change in time?

The table below shows the sales for a plastics manufacturer 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?

One component of a time series is cyclical variation. An example of cyclical variation is the business cycle that consists of periods of prosperity followed by periods of recession, depression, and recovery.

For an annual time series extending from 2000 through 2010, how many years would be lost in a three year moving average?

The forecast for the third quarter is 1,000 units; the seasonal index for the quarter is 0.85. What are the seasonally adjusted sales for the quarter?

Even if it is zero, every time series has this component. Name it. __________________

For the third quarter, the sales are 2,000 units; the seasonal index for the quarter is 1.15. What are the deseasonalized sales for the quarter?

To calculate monthly typical seasonal indexes, after computing the ratio-to-moving averages, the averages must be:

The following linear trend equation was developed for the annual sales of the Jordan Manufacturing Company. = 500 + 60t (in $thousands). At what rate are sales increasing?

A useful method for eliminating fluctuations in a time series is computing a ______.

The Durbin-Watson statistic is based on the

What type of analysis predicts the future on the basis of past data? ______________________________

Given a linear time series trend, Ŷ = 5.2 + 3.1t, what is the forecast for 2010 if the time series started in 2003?

For a straight trend line, what represents the amount of change in Ŷ for each increase of one unit in t? _________________________

What is the correct order of events in a typical business cycle?

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