Looking for Statistics for business and economics test answers and solutions? Browse our comprehensive collection of verified answers for Statistics for business and economics at moodle-exam.unistra.fr.
Get instant access to accurate answers and detailed explanations for your course questions. Our community-driven platform helps students succeed!
) The time-series model Xt = Tt × St × Ct × It is used for forecasting, where Tt, St, Ct, and It are respectively the trend, seasonal, cyclical, and irregular components of the time series, and Xt is the value of the time series at time t. The following estimates are obtained: = 125, = 0.92, = 1.04, and = 0.90. The model will produce a forecast of:
Write the answer as following:
XXX.XX
The table below is the quarterly data of the Shiller Real Home Price Index. To remove the seasonality a centered 4-point moving average is used.
Year | Real Home Price Index |
1.1 | 106.5058955 |
1.2 | 109.3296707 |
1.3 | 101.2225795 |
1.4 | 100.0466076 |
2.1 | 105.8948393 |
2.2 | 103.8986687 |
2.3 | 103.9743275 |
2.4 | 114.7133093 |
3.1 | 114.199126 |
3.2 | 115.4621261 |
3.3 | 115.3166155 |
What is the value of ?
Write the answer as following:
XXX.XX
The table below is the quarterly data of the Shiller Real Home Price Index. To remove the seasonality a centered 4-point moving average is used.
Year | Real Home Price Index |
1.1 | 106.5058955 |
1.2 | 109.3296707 |
1.3 | 101.2225795 |
1.4 | 100.0466076 |
2.1 | 105.8948393 |
2.2 | 103.8986687 |
2.3 | 103.9743275 |
2.4 | 114.7133093 |
3.1 | 114.199126 |
3.2 | 115.4621261 |
3.3 | 115.3166155 |
What is the value of ?
Write the answer as following:
XXX.XX
A time series is a:
In a multiple regression model, the following statistics are given: SSE = 100, R2 = 0.995, K = 5, and n = 15. Determine the multiple coefficient of determination adjusted for degrees of freedom.
Write the answer as following:
X.XXX
In examining the determinants of income, data were collected regarding the characteristics of 45 adults, and the regression Y = β0 + β1X1 + β2X2 + β3X3 +ε was used, where Y is the annual income (in thousands of dollars), X1 is the person's age, X2 is his/her years of education, and X3 is a dummy variable = 1 if the adult is female.
If you get
A multiple regression analysis involving three independent variables and 25 data points results in a value of 0.769 for the unadjusted multiple coefficient of determination. The adjusted multiple coefficient of determination is:
A loan officer is interested in examining the determinants of the total dollar value of residential loans made during a month. She used Y = β0 + β1X1 + β2X2 + β3X3 + β4X4 + ε to model the relationship, where Y is the total dollar value of residential loans in a month (in millions of dollars), X1 is the number of loans, X2 is the interest rate, X3 is the dollar value of expenditures of the bank on advertising (in thousands of dollars), and X4 is a dummy variable equal to 1 if the observation is either June, July, or August.
Suppose that she obtained
A loan officer is interested in examining the determinants of the total dollar value of residential loans made during a month. She used Y = β0 + β1X1 + β2X2 + β3X3 + β4X4 + ε to model the relationship, where Y is the total dollar value of residential loans in a month (in millions of dollars), X1 is the number of loans, X2 is the interest rate, X3 is the dollar value of expenditures of the bank on advertising (in thousands of dollars), and X4 is a dummy variable equal to 1 if the observation is either June, July, or August.
Suppose that she obtained
In examining the determinants of income, data were collected regarding the characteristics of 45 adults, and the regression lnY = β0 + β1 lnX1 + β2 lnX2 + β3X3 + ε was used, where Y is the annual income (in thousands of dollars), X1 is the adult's age, X2 is his/her years of education, and X3 is a dummy variable = 1 and is used if the adult is female. You run the regression and obtain the equation ln
How would you interpret the coefficient on years of education?