The F-distribution is the sampling distribution of the ratio of: ...

[bobbysung]

The F-distribution is the sampling distribution of the ratio of:
 a. two sample variances.
  b. two normal population means.
  c. two normal population variances.
  d. None of these choices.

Question 2

The formula St = wyt + (1 - w)St-1 is used in time-series forecasting with exponential smoothing, where St is the exponentially smoothed time series at time t, yt is the value of the time series at time t, and w is the smoothing constant. The forecasted value at time t + 1 where w = .4 is given by:
 a. Ft + 1 = 0.4yt +1 + 0.6St + 1 c. Ft + 1 = 0.4yt + 0.6St - 1
  b. Ft + 1 = 0.4yt + 0.6St d. Ft + 1 = 0.4yt - 1 + 0.6St

[matt95]

Answer to Question 1

A

Answer to Question 2

C

[bobbysung]

Excellent

[JaynaD87]

TYSM