The cost of consumer purchases such as single-family housing, gasoline, Internet services, tax preparation, and hospitalization were provided in The Wall-Street Journal (January 2, 2007). Sample data typical of the cost of tax-return preparation by services such as H&R Block are shown below.120        230       110        115        160130        150        105        195        155105        360       120       120       140100        115       180       235       255Compute mean, median and mode. What is the 39th percentile? What is standard deviation.What is five number summary ?

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Asked Oct 3, 2019
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The cost of consumer purchases such as single-family housing, gasoline, Internet services, tax preparation, and hospitalization were provided in The Wall-Street Journal (January 2, 2007). Sample data typical of the cost of tax-return preparation by services such as H&R Block are shown below.

120        230       110        115        160

130        150        105        195        155

105        360       120       120       140

100        115       180       235       255

Compute mean, median and mode. What is the 39th percentile? What is standard deviation.

What is five number summary ?

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Expert Answer

Step 1

The descriptive statistics are calculated in EXCEL. The procedure is as follows.

  • Enter the data in column A.
  • Go to Data > data analysis > descriptive statistics.
  • Enter the range of the data.
  • Click on Summary Statistics.
  • Click OK.
Step 2

Output for the data is given below.

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Column1 Mean 160 Standard Error 14.83239697 Median 135 Mode 120 Standard Deviation 66.33249581 Sample Variance 4400 Kurtosis 3.151643617 Skewness 1.720946929 Range 260 Minimum 100 Maximum 360 Sum 3200 Count 20

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Step 3

From the above output,

Mean = 160

Median = 135

Mode = 120

Standard Deviation = 66.3325

The value of 1st quartil...

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QUARTILE(A1:A20,1) C1 А B 115 1 120 2 130 3 105 4 100 5 230 6 150 7 360 8 115 9 110 10 105 11 120 180 12 13 115 14 195 15 120 235 16 17 160 18 155 19 140 20 255

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