Cost accountant often estimate overhead based on the level of production. At the standard knitting co they have collected information on overhead expenses and units produced at different plants and want to estimate a regression equation to predict future overhead.

Overhead 191 170 272 155 280 173 234 116 153 178

Units 40 42 53 35 56 39 48 30 37 40

1. Predict overhead when 50 units are produced

2. Calculate the standard error of estimate