Question

In: Statistics and Probability

An important application of regression analysis in accounting is in the estimation of cost. By collecting...

An important application of regression analysis in accounting is in the estimation of cost. By collecting data on volume and cost and using the least squares method to develop an estimated regression equation relating volume and cost, an accountant can estimate the cost associated with a particular manufacturing volume. Consider the following sample of production volumes and total cost data for a manufacturing operation.

Production Volume (units) Total Cost ($)
400 3,900
450 4,900
550 5,300
600 5,800
700 6,300
750 6,900
  1. Compute b1 and b0 (to 1 decimal).
    b1
    b0

    Complete the estimated regression equation (to 1 decimal).
    =  +  x
  2. What is the variable cost per unit produced (to 1 decimal)?
    $
  3. Compute the coefficient of determination (to 3 decimals). Note: report r2 between 0 and 1.
    r2 =

    What percentage of the variation in total cost can be explained by the production volume (to 1 decimal)?
    %
  4. The company's production schedule shows 500 units must be produced next month. What is the estimated total cost for this operation (to the nearest whole number)?
    $

Solutions

Expert Solution

I am Using Excel

Output

SUMMARY OUTPUT
Regression Statistics
Multiple R 0.979127101
R Square 0.958689879
Adjusted R Square 0.948362349
Standard Error 241.5229458
Observations 6
ANOVA
df SS MS F Significance F
Regression 1 5415000 5415000 92.82857143 0.00064897
Residual 4 233333.3333 58333.33333
Total 5 5648333.333
Coefficients Standard Error t Stat P-value Lower 95% Upper 95%
Intercept 1146.6667 464.1599341 2.470412852 0.068916206 -142.0479105 2435.381244
Production Volume (units)(x) 7.6 0.788810638 9.634758504 0.00064897 5.409910566 9.790089434

====================================

====================================

b)  7.6

===================================

c) r2 = 0.959

______________________________

r2 = 95.9 %

===================================

d)


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An important application of regression analysis in accounting is in the estimation of cost. By collecting data on volume and cost and using the least squares method to develop an estimated regression equation relating volume and cost, an accountant can estimate the cost associated with a particular manufacturing volume. Consider the following sample of production volumes and total cost data for a manufacturing operation. Production Volume (units) Total Cost ($) 400 4,100 450 5,100 550 5,500 600 6,000 700 6,500...
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