A Time Series with Forecast Values and Error Terms Is

question 5

Multiple Choice

A time series with forecast values and error terms is presented in the following table.The mean squared error (MSE) for this forecast is ___________. $\begin{array}{|r|r|r|r|}\hline \text { Monthh } & \text { Actual } & \text { Forecast} & \text { Error } \\\hline \text { July } & 5 & & \\\hline \text { Aug } & 11 & 5 & 6.00 \\\hline \text { Sept } & 13 & 6.8 & 6.20 \\\hline \text { Oct } & 6 & 8.66 & -2.66 \\\hline \text { Nov } & 5 & 7.862 & -2.86 \\\hline\end{array}$

• A)13.33
• B)17.94
• C)89.71
• D)22.43
• E)32.34

Understand the unique capabilities of digital technology in promoting and sustaining customer relationships.

Define and understand the role of cross-channel consumers in modern marketing.

Describe methods of measuring channel performance in multichannel marketing.

Understand the integration of interactive marketing elements to create a comprehensive customer experience.

---

Definitions:

S-Cam Actuated Brakes

A type of drum brake system where an S-shaped cam is used to push brake shoes apart and against the brake drum to stop a vehicle.

Wedge Brakes

An air foundation brake system in which an air chamber forces a wedge between brake shoes forcing them into a brake drum to effect retarding force. Wedge brakes are usually actuated on both sides (unlike S-cam brakes) and so have higher theoretical braking efficiencies.

Maintenance Costs

The expenses associated with keeping an item, equipment or property in its best operating condition, including repairs, replacements, and routine check-ups.

Dry Cement

A powdery substance made by calcining lime and clay, used with water to make concrete, mortar, or plaster.