The Actual and Forecast Values of a Time Series Are

question 122

Essay

The actual and forecast values of a time series are shown below. $$\begin{array} { | c c | } \hline \text { Actual values } y _ { t } & \text { Forecast values } F _ { t } \\\hline 135 & 140 \\162 & 165 \\155 & 150 \\182 & 191 \\174 & 168 \\194 & 190 \\233 & 220 \\280 & 240 \\\hline\end{array}$$ a. Calculate the mean absolute deviation (MAD).
b. Calculate the sum of squares for forecast error (SSE).

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Definitions:

Medication

Substances used for medical treatment, especially for the diagnosis, treatment, or prevention of disease.

Analogue Observation

Observation of behaviors in a simulated or structured environment akin to real-life situations, used in psychological assessment and research.

Self-Monitoring

The process of paying close attention to one's own behavior and using these observations to shape behavior according to social cues and personal objectives.