The Linear Trend $\hat { Y } _ { t } = 120 + 2 _ { t }$

question 40

Multiple Choice

The linear trend $\hat { Y } _ { t } = 120 + 2 _ { t }$
Was estimated using a time series with 20 time periods.The forecasted value for time period 21 is

• A) 120
• B) 122
• C) 160
• D) 162

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Definitions:

Driveshaft Speeds

The rotational speed of the driveshaft, which translates engine power to motion in a vehicle, varying with engine speed and gear selection.

Overdrive

Any drivetrain arrangement in which an output speed exceeds input speed. For instance, most transmissions have overdrive ratio options, meaning that transmission tailshaft speed exceeds engine crankshaft speed.

Slip Spline

A mechanical feature allowing axial movement between shaft sections, facilitating changes in length during operation.

Driveshaft Assembly

A mechanical component used to transmit torque from the vehicle's engine to its wheels.