Refer to the information in E5-5 regarding Mountain Dental. Required: 1. Perform a least-squares regression using Mountains

Refer to the information in E5-5 regarding Mountain Dental.

Required:
1. Perform a least-squares regression using Mountain’s activity and cost information and state the linear cost equation (y = a + bx).
2. Explain what each component of the cost equation represents.
3. Do the regression results differ from those obtained using the high-low and scatter graph methods? If so,why?

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Number of Cavities Filled 0 Month Total Cost January February March April May June July August September $5,600 6,000 4,500 4,100 4,500 3,200 3,500 4,900 5,400 450