The Data in the Following Table Represent Time-Study Observations on a New

question 169

Essay

The data in the following table represent time-study observations on a new operation with three work elements. On the basis of these observations, find the standard time for the process. Assume a 15% allowance factor.
$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\text{Observations (times in seconds)}$
$\begin{array}{|c|c|c|c|c|c|}\hline \text { Element } & \text { Performance Rating } & 1 & 2 & 3 & 4 \\\hline 1 & 120 \% & 90.3 & 91.5 & 92.4 & 90.2 \\\hline 2 & 100 \% & 30.5 & 32.3 & 29.6 & 31.1 \\\hline 3 & 105 \% & 130.5 & 128.9 & 132 & 130.5 \\\hline\end{array}$

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