标题: Reading 11: Correlation and Regression-LOS j习题精选 [打印本页]
作者: 土豆妮 时间: 2010-4-8 12:24 标题: [2010]Session 3Reading 11: Correlation and Regression-LOS j习题精选
Session 3: Quantitative Methods: Quantitative
Methods for Valuation
Reading 11: Correlation and Regression
LOS j: Discuss the limitations of regression analysis.
Regression analysis has a number of assumptions. Violations of these assumptions include which of the following?
|
A) |
Independent variables that are not normally distributed. | |
|
B) |
A zero mean of the residuals. | |
|
C) |
Residuals that are not normally distributed. | |
作者: 土豆妮 时间: 2010-4-8 12:24
Regression analysis has a number of assumptions. Violations of these assumptions include which of the following?
|
A) |
Independent variables that are not normally distributed. | |
|
B) |
A zero mean of the residuals. | |
|
C) |
Residuals that are not normally distributed. | |
The assumptions include a normally distributed residual with a constant variance and a mean of zero.
作者: 土豆妮 时间: 2010-4-8 12:24
Limitations of regression analysis include all of the following EXCEPT:
|
A) |
parameter instability. | |
|
B) |
outliers may affect the estimated regression line. | |
|
C) |
regression results do not indicate anything about economic significance. | |
作者: 土豆妮 时间: 2010-4-8 12:24
Limitations of regression analysis include all of the following EXCEPT:
|
A) |
parameter instability. | |
|
B) |
outliers may affect the estimated regression line. | |
|
C) |
regression results do not indicate anything about economic significance. | |
The estimated coefficients tell us something about economic significance – they tell us the expected or average change in the dependent variable for a given change in the independent variable.
作者: 土豆妮 时间: 2010-4-8 12:24
Wanda Brunner, CFA, is working on a regression analysis based on publicly available macroeconomic time-series data. The most important limitation of regression analysis in this instance is:
|
A) |
the error term of one observation is not correlated with that of another observation. | |
|
B) |
low confidence intervals. | |
|
C) |
limited usefulness in identifying profitable investment strategies. | |
作者: 土豆妮 时间: 2010-4-8 12:25
Wanda Brunner, CFA, is working on a regression analysis based on publicly available macroeconomic time-series data. The most important limitation of regression analysis in this instance is:
|
A) |
the error term of one observation is not correlated with that of another observation. | |
|
B) |
low confidence intervals. | |
|
C) |
limited usefulness in identifying profitable investment strategies. | |
Regression analysis based on publicly available data is of limited usefulness if other market participants are also aware of and make use of this evidence.
作者: maxsimax 时间: 2010-4-14 14:44
thanks
作者: luqian55 时间: 2010-4-20 18:44
thank you
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