Which of the Following Is True from the Equation $\sum \left( x _ { i } - \bar { x } \right)$

question 78

Multiple Choice

Which of the following is true from the equation: $\sum \left( x _ { i } - \bar { x } \right)$ = 0, where $\bar{x}$ is the mean of the sample?

• A) The sum of the deviations above the mean are the same as the sum of the deviations below the mean
• B) Half the data lie above the mean of the values
• C) The specific set of values does not have any outliers affecting the mean
• D) Half the data lie below the mean of the values

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Definitions:

Supplies Cost

The cost associated with materials and items used in the operation or maintenance of a business or facility.

Machine-Hours

A measure of the amount of time a machine is operated, used for allocating machine operation costs to products or units produced.

Direct Labor Variances

The differences between the budgeted and actual costs of direct labor, analyzed to understand deviations in manufacturing expenses.

Variable Overhead Cost

Those expenses of operating a business that vary with the level of output or production activity, such as utilities for manufacturing equipment.