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Terms in this set (14)
What two values does the dependent variable equal in logistic regression and what do these values represent?
The dependent variable y representing 1 equals if the event of interest has occurred and 0 otherwise.
1. Define the odds of an event.
2. Define the odds ratio for xj.
1. The odds of an event is the probability of the event occurring divided by the probability of the event not occurring.
2. The odds ratio for xj is the proportional change in the odds associated with a one unit increase in xj holding all other x-variables constant.
3/12
A soccer player takes a shot on goal 15 times and scores a goal 3 of those attempts. What are the odds of the soccer player scoring a goal?
Smoothing constant
Which of the following is not a component of time series?
Cyclical
The ________ component of a time series measures the fluctuations in a time series due to economic conditions of prosperity and recession with a duration of approximately 2 years or longer.
Trend
The ________ component of a time series reflects the long-run decline or growth in a time series.
Irregular
The ________ component of a time series refers to the erratic time series movements that follow no recognizable or regular pattern.
Seasons minus 1
In general, the number of dummy variables used to model constant seasonal variation is equal to the number of
Seasonal
Those fluctuations that are associated with climate, holidays, and related activities are referred to as ________ variations.
45.9
Assume that the current date is February 1, 2003. The linear regression model was applied to a monthly time series based on the last 24 months' sales (from January 2000 through December 2002). The following partial computer output summarizes the results.
Coefficient Estimate t
Intercept 4.3 2.07
Slope 1.6 2.98
Determine the predicted sales for this month
4
In a given week, the NYSE (New York Stock Exchange) is generally open from Monday through Friday. If we wanted to use the multiple regression method with dummy variables to study the impact of the day of the week on stock market performance, we would need ________ dummy variables.
Quantitative
Unlike a classification tree, a regression tree enables us to predict the rate of a _____________ response variable
rate of return on an investment
Which of the following possible response variables is most appropriate for a tree
.5250
Suppose that a bank wishes to predict whether or not...
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