Shaw Incorporated began this period with a budget for 1,180 units of predicted production. The budgeted overhead at this predicted activity follows. At period-end, total actual overhead was $111,800, and actual units produced were 1,080 . The company applies overhead with a standard of 3DLH per unit and a standard overhead rate of $30 per DLH. a. Compute controllable variance. b. Compute volume variance. Complete this question by entering your answers in the tabs below. Compute controllable variance. (Indicate the effect of the variance by selecting favorable, unfavorable, or no variance.)