1. (Multi)Collinearity . a.Occurs when we can determine the value of the depende
ID: 3237319 • Letter: 1
Question
1. (Multi)Collinearity .
a.Occurs when we can determine the value of the dependent variable from a set of independent variables.
b.Occurs when we can determine the value of one independent variable from a set of independent variables.
c.Is one of the many problems that may occur in multiple regression which violate assumptions about the residuals.
d.Occurs if there are too many independent variables in a regression.
e.None of the above
2.The residual is .
a.The difference between the observed value and predicted value of yi
b.The largest fitted value of yi
c.The smallest fitted value of yi
d.Represents the difference between the true but unknown value of yi and its observed value
e.None of the above
3.What is the meaning of the term “heteroscedasticity”?
a.The variance of the errors is not constant.
b.The variance of the dependent variable is not constant.
c.The errors are not linearly independent of one another
d.The error has non-zero mean
e.All the above
4.Time series methods
a.Discover a pattern in historical data and project it into the future
b.Include cause-effect relationships
c.Are useful when historical information is not available
d.Are statistical tool to see the pattern for the large data set
e.All of the alternatives are true.
5.The forecasting method that is appropriate when the time series has no significant cyclical or seasonal effect is
a.Moving average
b.Mean squared error
c.Mean average deviation
d.Qualitative forecasting methods
e.None of above
6.The time series component that is analogous to the seasonal component but over a longer period of time is the
a.Irregular component
b.Trend component
c.Casual component
d.Cyclical component
e.Seasonal component
Explanation / Answer
Dear student, I am answering only the first question as per Chegg Guidelines, kindly post one question at a time.
Multicollinearty occurs when at least one of the independent variable can be determined from the rest of the independent varaibles.
So the correct answer is opyion b
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