Betty was attempting to estimate a model for her small business's overhead costs. She is 99.9% sure that overhead costs are driven primarily by production, but she also knows that this cost isn't entirely variable. So she grabbed the last 8 months of production and overhead cost data, listed it out, and plotted it as follows. Month # of Units Produced 1 2 3 4 5 6 7 8 230 190 260 320 340 300 250 270 Overhead Cost $2,440 1,690 2,050 2,630 2,290 2,580 2,060 2,840

Betty was attempting to estimate a model for her small business's overhead costs. She is 99.9% sure that overhead costs are driven primarily by production, but she also knows that this cost isn't entirely variable. So she grabbed the last 8 months of production and overhead cost data, listed it out, and plotted it as follows