In your spreadsheet calculate the estimated the line maintenance expense that would be predicted by the...

In your spreadsheet calculate the estimated the line maintenance expense that would be predicted by the quadratic regression function for each company in the sample . Plot these values on your graph (Connected with line) along with the original data and the orginal regression line.

Phone Services Data Collected from 12 companies

Customers (in 1000s)	Line Maint. Expense (in $1000s)
25.3	484.6
36.4	672.3
37.9	839.4
45.9	694.9
53.4	836.4
66.8	681.9
78.4	1,037.0
82.6	1,095.6
93.8	1,563.1
97.5	1,377.9
105.7	1,711.7
124.3	2,138.6

Expert Solution

Plot the data on a Scatter chart using Excel chart tools

Add Trendline, by right clicking on any data point on the chart.

Right click on the trend line and click Format trendline.

In the Trendline options, select Polynomial

Check box Display Equation on chart

keosha answered 5 months ago

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