A Time Series with Forecast Values Is Presented in the Following

question 87

Multiple Choice

A time series with forecast values is presented in the following table: $$\begin{array} { | r | r | r | } \hline \text { Month } & \text { Actual. } & \text { Forecast } \\\hline J a n & a & \\\hline \text { Mar } & 12 a & 1.1 a \\\hline \text { May} & 1.15 a & 1.2 a \\\hline J ul & 1.25 a & 12.21 a \\\hline \mathrm { Sep } & 1.3 a & 1.25 a \\\hline\end{array}$$
If the mean absolute deviation (MAD) is 257, then a = ______.

• A)4283.33
• B)428.33
• C)15.42
• D)42.833
• E)1.542

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Definitions:

Participant Modeling

A behavior therapy in which an appropriate response to a feared stimulus is modeled in graduated steps and the client attempts to imitate the model step by step, encouraged and supported by the therapist.

Phobia Extinction

The process where a phobia diminishes or disappears after repeated exposure to the feared object or situation without any negative consequences.

Flooding

A psychological treatment method where a person is exposed to their fear at full intensity in order to help them overcome it.

Fear-Provoking Situation

A circumstance or setting that induces a response of fear or anxiety, often leading to avoidance or defensive behaviors.