Question 1

Using the following time series data,   What is the four-quarter moving average for the period ending with the second quarter in 2010?

Accepted Answer

9.5
Explanation: Add the quart

Question 2

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

Question 3

The following table 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 1?

Accepted Answer

984
Explanation: Div

Question 4

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 5

Autocorrelation is measured by the trend component of a time series.

Accepted Answer

A) True 
 B)False

Question 6

Autocorrelation in a time series can be tested using the ___________.

Accepted Answer

durbin-wat

Question 7

Autocorrelation can be corrected by using a ________.

Accepted Answer

The answer of Autocorrelation can be corrected by using a...

Question 8

The trend forecast equation is Ŷ = 120 + 100t. The next forecast is for period 11. The typical seasonal index for period 11 is 0.82. What are the forecast sales for period 11?

Accepted Answer

A)  1,100 
B)  1,220 
C)  1,000 
D)  640 
A)  1,100 
B)  1,220 
C)  1,000 
D)  640

Question 9

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   Using the trend line equation and the seasonal indexes, predict demand for the third period of the next year .

Accepted Answer

1,742.16
Explanation: With t = 23 in the

Question 10

The forecast for the third quarter is 1,000 units; the seasonal index for the quarter is 1.10. What are the seasonally adjusted sales for the quarter?

Accepted Answer

A)  1,100 
B)  1,110 
C)  110 
D)  100 
A)  1,100 
B)  1,110 
C)  110 
D)  100

Question 11

Even if it is zero, every time series has a ________ component.

Accepted Answer

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

Question 12

The time series component that exhibits fluctuations over more than a year in time above and below the secular trend is ________.

Accepted Answer

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

Question 13

In the linear trend equation, the ____ variable represents the Y-intercept.

Accepted Answer

The answer of In the linear trend equation, the ____...

Question 14

In the linear trend equation, the letter "b" is the average change in Ŷ for each change of one unit (either increase or decrease) in t.

Accepted Answer

A) True 
 B)False

Question 15

The two types of irregular variations that are unpredictable are ______________________ and _____________________.

Accepted Answer

The answer of The two types of irregular variations that...

Question 16

A set of typical seasonal indexes is very useful in adjusting a time series for seasonal fluctuations. The resulting time series is the ___________________________.

Accepted Answer

deseasonal

Question 17

The trend forecast equation is Ŷ = 120 + 100t. The next forecast is for period 8. The typical seasonal index for period 8 is 0.80. What are the forecast sales for period 8?

Accepted Answer

A)  736 
B)  920 
C)  800 
D)  640 
A)  736 
B)  920 
C)  800 
D)  640

Question 18

The forecast for the third quarter is 3,000 units; the seasonal index for the quarter is 1.05. What are the seasonally adjusted sales for the quarter?

Accepted Answer

A)  3,000 
B)  3,005 
C)  3,150 
D)  2,360 
A)  3,000 
B)  3,005 
C)  3,150 
D)  2,360

Question 19

What is the difference between seasonal and cyclical variation in a time series?

Accepted Answer

Seasonal variation o

Question 20

The forecast for the third quarter is 3,000 units; the seasonal index for the quarter is 0.75. What are the seasonally adjusted sales for the quarter?

Accepted Answer

A)  3,000 
B)  3,079 
C)  2,250 
D)  1,015 
A)  3,000 
B)  3,079 
C)  2,250 
D)  1,015

Using the following time series data, What is the four-quarter moving average for the period ending with the second quarter in 2010?

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

The following table 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 1?

The Durbin-Watson statistic is based on the:

Autocorrelation is measured by the trend component of a time series.

Autocorrelation in a time series can be tested using the ___________.

Autocorrelation can be corrected by using a ________.

The trend forecast equation is Ŷ = 120 + 100t. The next forecast is for period 11. The typical seasonal index for period 11 is 0.82. What are the forecast sales for period 11?

The forecast for the third quarter is 1,000 units; the seasonal index for the quarter is 1.10. What are the seasonally adjusted sales for the quarter?

Even if it is zero, every time series has a ________ component.

The time series component that exhibits fluctuations over more than a year in time above and below the secular trend is ________.

In the linear trend equation, the ____ variable represents the Y-intercept.

In the linear trend equation, the letter "b" is the average change in Ŷ for each change of one unit (either increase or decrease) in t.

The two types of irregular variations that are unpredictable are __ and _.

A set of typical seasonal indexes is very useful in adjusting a time series for seasonal fluctuations. The resulting time series is the ___________________________.

The trend forecast equation is Ŷ = 120 + 100t. The next forecast is for period 8. The typical seasonal index for period 8 is 0.80. What are the forecast sales for period 8?

The forecast for the third quarter is 3,000 units; the seasonal index for the quarter is 1.05. What are the seasonally adjusted sales for the quarter?

What is the difference between seasonal and cyclical variation in a time series?

The forecast for the third quarter is 3,000 units; the seasonal index for the quarter is 0.75. What are the seasonally adjusted 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

Nonparametric Methods: Nominal Level Hypothesis Tests

Nonparametric Methods: Analysis of Ordinal Data

Index Numbers

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

Exam 18: Time Series and Forecasting

Using the following time series data, What is the four-quarter moving average for the period ending with the second quarter in 2010?

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

The following table 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 1?

The Durbin-Watson statistic is based on the:

Autocorrelation is measured by the trend component of a time series.

Autocorrelation in a time series can be tested using the ___________.

Autocorrelation can be corrected by using a ________.

The trend forecast equation is Ŷ = 120 + 100t. The next forecast is for period 11. The typical seasonal index for period 11 is 0.82. What are the forecast sales for period 11?

The forecast for the third quarter is 1,000 units; the seasonal index for the quarter is 1.10. What are the seasonally adjusted sales for the quarter?

Even if it is zero, every time series has a ________ component.

The time series component that exhibits fluctuations over more than a year in time above and below the secular trend is ________.

In the linear trend equation, the ____ variable represents the Y-intercept.

In the linear trend equation, the letter "b" is the average change in Ŷ for each change of one unit (either increase or decrease) in t.

The two types of irregular variations that are unpredictable are ______________________ and _____________________.

A set of typical seasonal indexes is very useful in adjusting a time series for seasonal fluctuations. The resulting time series is the ___________________________.

The trend forecast equation is Ŷ = 120 + 100t. The next forecast is for period 8. The typical seasonal index for period 8 is 0.80. What are the forecast sales for period 8?

The forecast for the third quarter is 3,000 units; the seasonal index for the quarter is 1.05. What are the seasonally adjusted sales for the quarter?

What is the difference between seasonal and cyclical variation in a time series?

The forecast for the third quarter is 3,000 units; the seasonal index for the quarter is 0.75. What are the seasonally adjusted 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

Nonparametric Methods: Nominal Level Hypothesis Tests

Nonparametric Methods: Analysis of Ordinal Data

Index Numbers

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

The two types of irregular variations that are unpredictable are __ and _.