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Get Full Access to Probability And Statistics For Engineers And The Scientists - 9 Edition - Chapter 1 - Problem 77e
Get Full Access to Probability And Statistics For Engineers And The Scientists - 9 Edition - Chapter 1 - Problem 77e

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# The authors of the article “Predictive Model for Pitting

ISBN: 9780321629111 32

## Solution for problem 77E Chapter 1

Probability and Statistics for Engineers and the Scientists | 9th Edition

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Problem 77E

The authors of the article “Predictive Model for Pitting Corrosion in Buried Oil and Gas Pipelines” (Corrosion, 2009: 332–342) provided the data on which their investigation was based. a. Consider the following sample of 61 observations on maximum pitting depth (mm) of pipeline specimens buried in clay loam soil. Construct a stem-and-leaf display in which the two largest values are shown in a last row labeled HI. b. Refer back to (a), and create a histogram based on eight classes with 0 as the lower limit of the first class and class widths of .5, .5, .5, .5, 1, 2, 5, and 5, respectively. c. The accompanying comparative boxplot from Minitab shows plots of pitting depth for four different types of soils. Describe its important features.

Step-by-Step Solution:

Solution: Step 1 : The given data is a sample of 61 observations on maximum pitting depth (mm) of pipeline specimens buried in clay loam soil. We have to construct a stem- leaf diagram based on the given data and a histogram based on eight classes with 0 as the lower limit of the first class and class widths of .5, .5, .5, .5, 1, 2, 5, and 5.

Step 2 of 3

Step 3 of 3

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