Aug 12th, 2014
Anonymous
Category:
Price: \$20 USD

Question description

1. Enrollment in a particular class for the last four semesters has been 122, 128, 100, and 155 (listed from oldest to most recent). The best forecast of enrollment next semester, based on a three-semester moving average, would be (Points : 1)  116.7.
126.3.
127.7.
135.0.

 Question 2. 2. Which of the following is not classified as a qualitative forecasting model? (Points : 1)
exponential smoothing
Delphi method
jury of executive opinion
sales force composite

 Question 3. 3. As one increases the number of periods used in the calculation of a moving average, (Points : 1)
greater emphasis is placed on more recent data.
less emphasis is placed on more recent data.
the emphasis placed on more recent data remains the same.
it requires a computer to automate the calculations.

 Question 4. 4. The condition of an independent variable being correlated to one or more other independent variables is referred to as (Points : 1)
multicollinearity.
statistical significance.
linearity.
nonlinearity.

 Question 5. 5. Which of the following statements is true about r2? (Points : 1)
It is also called the coefficient of correlation.
It is also called the coefficient of determination.
It represents the percent of variation in X that is explained by Y.
It represents the percent of variation in the error that is explained by Y.

 Question 6. 6. Which of the following methods gives an indication of the percentage of forecast error? (Points : 1)
MSE
MAPE
decomposition

 Question 7. 7. A graphical plot with sales on the Y axis and time on the X axis is a (Points : 1)
scatter diagram.
trend projection.
line graph.

 Question 8. 8. The coefficient of determination resulting from a particular regression analysis was 0.85. What was the correlation coefficient, assuming a positive linear relationship? (Points : 1)
0.5
-0.5
0.922
There is insufficient information to answer the question.

 Question 9. 9. A judgmental forecasting technique that uses decision makers, staff personnel, and respondent to determine a forecast is called (Points : 1)
exponential smoothing.
the Delphi method.
jury of executive opinion.
sales force composite.

 Question 10. 10. Enrollment in a particular class for the last four semesters has been 120, 126, 110, and 130. Suppose a one-semester moving average was used to forecast enrollment (this is sometimes referred to as a naïve forecast). Thus, the forecast for the second semester would be 120, for the third semester it would be 126, and for the last semester it would be 110. What would the MSE be for this situation? (Points : 1)
196.00
230.67
100.00
42.00

 Question 11. 11. Demand for soccer balls at a new sporting goods store is forecasted using the following regression equation: Y = 98 + 2.2X where X is the number of months that the store has been in existence. Let April be represented by X = 4. April is assumed to have a seasonality index of 1.15. What is the forecast for soccer ball demand for the month of April (rounded to the nearest integer)? (Points : 1)
123
107
100
115

 Question 12. 12. The correlation coefficient resulting from a particular regression analysis was 0.25. What was the coefficient of determination? (Points : 1)
0.5
-0.5
0.0625
There is insufficient information to answer the question.

 Question 13. 13. Which of the following statements is true regarding a scatter diagram? (Points : 1)
It provides very little information about the relationship between the regression variables.
It is a plot of the independent and dependent variables.
It is a line chart of the independent and dependent variables.
It has a value between -1 and +1.

 Question 14. 14. Which of the following statements about scatter diagrams is true? (Points : 1)
Time is always plotted on the y-axis.
It can depict the relationship among three variables simultaneously.
It is helpful when forecasting with qualitative data.
The variable to be forecasted is placed on the y-axis.

 Question 15. 15. Which of the following statements is not true about regression models? (Points : 1)
Estimates of the slope are found from sample data.
The regression line minimizes the sum of the squared errors.
The dependent variable is the explanatory variable.
The intercept coefficient is not typically interpreted.

 Question 16. 16. A medium-term forecast is considered to cover what length of time? (Points : 1)
2-4 weeks
1 month to 1 year
2-4 years
5-10 years

 Question 17. 17. Assume that you have tried three different forecasting models. For the first, the MAD = 2.5, for the second, the MSE = 10.5, and for the third, the MAPE = 2.7. We can then say: (Points : 1)
the third method is the best.
the second method is the best.
methods one and three are preferable to method two.
None of the above

 Question 18. 18. Daily demand for newspapers for the last 10 days has been as follows: 12, 13, 16, 15, 12, 18, 14, 12, 13, 15 (listed from oldest to most recent). Forecast sales for the next day using a three-day weighted moving average where the weights are 3, 1, and 1 (the highest weight is for the most recent number). (Points : 1)
12.8
13.0
70.0
14.0

 Question 19. 19. Which of the following is considered to be one of the components of a time series? (Points : 1)
trend
seasonality
cycles
All of the above

 Question 20. 20. When is the exponential smoothing model equivalent to the naïve forecasting model? (Points : 1)
a = 0
a = 0.5
a = 1
never

(Top Tutor) Ayush K
School: University of Maryland

Studypool has helped 1,244,100 students

Review from student
Anonymous
" Totally impressed with results!! :-) "

1827 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors