Wollongong Pathology is a medical testing laboratory situated in Wollongong. Dr. Curin Strong the CEO of the center is in the process of making an estimation on the cost of X- rays of the center. The number of X-rays taken and X-ray costs over the last nine months in Wollongong Pathology are given below: Month X-Rays Taken X-Rays Costs($) January 6,250 $28,000 February 7,000 $29,000 March 5,000 $23,000 April 4,250 $20,000 May 4,500 $22,000 June 3,000 $17,000 July 3,750 $18,000 August 5,500 $24,000 September 3,250 $16,000 a. Using High-Low method, estimate the cost formula for X-ray costs. b. Estimate the cost of X-rays for October using both regression and high-low methods, assuming a least-square regression analysis estimated the total fixed costs to be $5,920 per month and the variable cost to be $3.38. The number of X-rays for October is expected to be 4,000. Comment on the accuracy of the high-low estimates.

Cornerstones of Cost Management (Cornerstones Series)
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Author:Don R. Hansen, Maryanne M. Mowen
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Chapter3: Cost Behavior
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Wollongong Pathology is a medical testing laboratory situated in Wollongong. Dr. Curin
Strong the CEO of the center is in the process of making an estimation on the cost of X-
rays of the center. The number of X-rays taken and X-ray costs over the last nine months
in Wollongong Pathology are given below:
Month
X-Rays Taken X-Rays Costs($)
January
6,250
$28,000
February 7,000
$29,000
March
5,000
$23,000
April
4,250
$20,000
May
4,500
$22,000
June
3,000
$17,000
July
3,750
$18,000
August
5,500
$24,000
September 3,250
$16,000
a. Using High-Low method, estimate the cost formula for X-ray costs.
b. Estimate the cost of X-rays for October using both regression and high-low methods,
assuming a least-square regression analysis estimated the total fixed costs to be $5,920
per month and the variable cost to be $3.38. The number of X-rays for October is
expected to be 4,000. Comment on the accuracy of the high-low estimates.
Transcribed Image Text:Wollongong Pathology is a medical testing laboratory situated in Wollongong. Dr. Curin Strong the CEO of the center is in the process of making an estimation on the cost of X- rays of the center. The number of X-rays taken and X-ray costs over the last nine months in Wollongong Pathology are given below: Month X-Rays Taken X-Rays Costs($) January 6,250 $28,000 February 7,000 $29,000 March 5,000 $23,000 April 4,250 $20,000 May 4,500 $22,000 June 3,000 $17,000 July 3,750 $18,000 August 5,500 $24,000 September 3,250 $16,000 a. Using High-Low method, estimate the cost formula for X-ray costs. b. Estimate the cost of X-rays for October using both regression and high-low methods, assuming a least-square regression analysis estimated the total fixed costs to be $5,920 per month and the variable cost to be $3.38. The number of X-rays for October is expected to be 4,000. Comment on the accuracy of the high-low estimates.
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