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

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. $$\begin{array} { | c | c | c | c | c | c | } \hline & & { \text { Observations(times in seconds) } } \\\hline \text { Element } & \text { Performance Rating } & 1 & 2 & 3 & 4 \\\hline 1 & 120 \% & 90.3 & 91.5 & 92.4 & 90.2 \\\hline 2 & 100 \% & 30.5 & 32.3 & 29.6 & 31.1 \\\hline 3 & 105 \% & 130.5 & 128.9 & 132 & 130.5 \\\hline\end{array}$$