Q 64

Models such as moving average,exponential smoothing,and linear trend use only:
A) future values of Y to forecast previous values of Y
B) previous values of Y to forecast future values of Y
C) multiple explanatory variables (not just values of Y)to forecast future values of Y
D) ratio-to-moving-average methods

Q 65

The following are the values of a time series for the first four time periods:
T
1
2
3
4
24
25
26
27
Using a four-period moving average,the forecasted value for time period 5 is:
A) 24.5
B) 25.5
C) 26.5
D) 27.5

Q 66

Related to the runs test,if T is reasonably large (T > 20 is suggested),then the statistic can be used to perform this test.
A) F
B) t
C) Z
D)