开发者:上海品职教育科技有限公司 隐私政策详情

应用版本:4.2.11(IOS)|3.2.5(安卓)APP下载

欲溺之鱼 · 2024年06月19日

为什么t=183?

* 问题详情,请 查看题干

NO.PZ201709270100000401

问题如下:

1.Based on Exhibit 1, the predicted WTI oil price for October 2015 using the linear trend model is closest to:

选项:

A.

$29.15.

B.

$74.77.

C.

$103.10.

解释:

C is correct. The predicted value for period t from a linear trend is calculated as

yt=b0+b1(t{\overset\wedge y}_t={\overset\wedge b}_0+{\overset\wedge b}_1(t

October 2015 is the second month out of sample, or t = 183. So, the predicted value for October 2015 is calculated as

yt{\overset\wedge y}_t = 28.3278 + 0.4086(183) = $103.10.

Therefore, the predicted WTI oil price for October 2015 based on the linear trend model is $103.10.

从哪里可以得出t=183这个结论

1 个答案

品职助教_七七 · 2024年06月20日

嗨,努力学习的PZer你好:


题干给出2015.8为第181个月,所以本题要计算的October 2015就是第183个月。

----------------------------------------------
努力的时光都是限量版,加油!