NO.PZ202109130200004503
问题如下:
Which of Olabudo’s observations of forecasting is correct?
选项:
A.Only Observation 1
Only Observation 2
Both Observation 1 and Observations 2
解释:
B is correct. The confidence level influences the width of the forecast interval through the critical t-value that is used to calculate the distance from the fore-
casted value: The larger the confidence level, the wider the interval. Therefore, Observation 1 is not correct.
Observation 2 is correct. The greater the standard error of the estimate, the greater the standard error of the forecast.
能再解释下OBERSERVATION 2么,我感觉我把这个和t=b1-0/Sb1搞混了, t=b1-0/Sb1里面,Sb1大,t小,所以选错了。