Consider the Following Time Series Data A Construct a Time Series Plot

question 23

Essay

Consider the following time series data. $$\begin{array} { | c | c | } \hline \text { Year } & \text { Value } \\\hline 1 & 234 \\\hline 2 & 287 \\\hline 3 & 255 \\\hline 4 & 310 \\\hline 5 & 298 \\\hline 6 & 250 \\\hline 7 & 302 \\\hline 8 & 267 \\\hline 9 & 225 \\\hline 10 & 336 \\\hline\end{array}$$
a. Construct a time series plot. What type of pattern exists in the data?
b. Develop a three-year moving average for this time series. Compute MSE and a forecast for the year 11.

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Definitions:

Variable Overhead Efficiency Variance

The difference between the actual variable overhead costs incurred and the expected (or standard) costs, based on the efficient use of resources.

Standard Cost Variances

The difference between the actual costs incurred and the standard costs pre-established for manufacturing or production.

Cost Of Goods Sold

The direct expenditures involved in producing the products a company sells, namely labor and materials costs.

Adjusted Cost Of Goods Sold

The cost of goods sold after adjustments for changes in inventory levels, returned goods, and possibly other factors affecting the cost of sales.