32). Which of the following is a similarity between the exponential smoothing me

ID: 3157758 • Letter: 3

Question

32). Which of the following is a similarity between the exponential smoothing method and the moving average method?

a). Both methods give different weights to most recent observations.

b). Both methods assign weights to all available observations.

c). Both methods give equal weight to every observation.

d). Both methods continually revise a forecast when a new observation becomes available.

41). Which of the following methods is probably not appropriate to use if the time series exhibits an upward or downward tendency?

a). Seasonal Method

b). Linear Trend Model

c). Moving Averages

d). Autoregressive

42). If r2 = +.60, we can conclude that:

a). 60 percent of the sample cases were above the regression line.

b). 60 percent the variability of the Y values is explained by the linear relationship with X.

c). the variability of the Y values around the regression line is 60 percent less than that of the Y values when no account of X is taken.

d). on the average, Y will increase by .60 when X is increased by one unit.

43). The residuals represent

a). the difference between the actual Y values and the mean of Y.

b). the difference between the actual Y values and the predicted Y values.

c). the predicted value of Y for the average X value.

d). the difference between the predicted values of Y and the mean of Y.

44). Unsystematic patterns are caused by the presence of a

a). random error.

b). special or assignable causes.

c). explained variation.

d). time series.

45). The least squares method minimizes which of the following?

a). SST

b). SSR

c). SSE

d). none of the above

32) A

41) D

42) B

43) B

44) A

45) B

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