Oil field pipes are internally coated in order to prevent corrosion. Researchers investigated the influence that coating may have on the surface roughness of oil field pipes. A scanning probe instrument was used to measure the surface roughness of each in a sample of 20 sections of coated interior pipe. The data (in micrometers) are provided in the table below. Complete parts a through c. 1.04 1.55 2.53 2.29 2.69 1.62 2.41 1.74 1.78 2.71 1.75 2.91 2.78 1.89 2.77 1.38 1.13 2.16 2.81 1.67 a. Find and interpret the mean of the sample x= micrometers (Round to three decimal places as needed.) Interpret the mean of the sample. Choose the correct answer below. Please copy and paste data from text area below. Selected delimiter: Tab O A. Half of the values in the data set are greater than the value of the mean. 1.04 O B. The mean is the value of the average roughness in the data set. O c. The mean is the value that occurs most often in the data set. 1.55 2.53 2.29 b. Find and interpret the median of the sample. 2.69 m = micrometers 1.62 (Round to three decimal places as needed.) 2.41 1.74 Interpret the median of the sample. Choose the correct answer below. 1.78 O A. The median is the value of the average roughness in the data set. 2.71 1.75 O B. The median is the value that occurs most often in the data set. 2.91 O C. Half of the values in the data set are greater than the value of the median. 2.78 1.89 c. Which measure of central tendency (the mean or the median) best describes the surface roughness of the sampled pipe sections? Explain. 2.77 1.38 O A. Neither the mean nor the median are descriptive of the "center" of the data set. 1.13 O B. The median should be used to describe the roughness of the sampled pipe sections because it is most descriptive of the "center" of the data set. 2.16 OC. The two values are nearly the same, so either of them could be used to best describe the roughness of the sampled pipe sections. O D. The mean should be used to describe the roughness of the sampled pipe sections because it is most descriptive of the "center" of the data set. 2.81 1.67 Done Click to select your answer(s). ?
Oil field pipes are internally coated in order to prevent corrosion. Researchers investigated the influence that coating may have on the surface roughness of oil field pipes. A scanning probe instrument was used to measure the surface roughness of each in a sample of 20 sections of coated interior pipe. The data (in micrometers) are provided in the table below. Complete parts a through c. 1.04 1.55 2.53 2.29 2.69 1.62 2.41 1.74 1.78 2.71 1.75 2.91 2.78 1.89 2.77 1.38 1.13 2.16 2.81 1.67 a. Find and interpret the mean of the sample x= micrometers (Round to three decimal places as needed.) Interpret the mean of the sample. Choose the correct answer below. Please copy and paste data from text area below. Selected delimiter: Tab O A. Half of the values in the data set are greater than the value of the mean. 1.04 O B. The mean is the value of the average roughness in the data set. O c. The mean is the value that occurs most often in the data set. 1.55 2.53 2.29 b. Find and interpret the median of the sample. 2.69 m = micrometers 1.62 (Round to three decimal places as needed.) 2.41 1.74 Interpret the median of the sample. Choose the correct answer below. 1.78 O A. The median is the value of the average roughness in the data set. 2.71 1.75 O B. The median is the value that occurs most often in the data set. 2.91 O C. Half of the values in the data set are greater than the value of the median. 2.78 1.89 c. Which measure of central tendency (the mean or the median) best describes the surface roughness of the sampled pipe sections? Explain. 2.77 1.38 O A. Neither the mean nor the median are descriptive of the "center" of the data set. 1.13 O B. The median should be used to describe the roughness of the sampled pipe sections because it is most descriptive of the "center" of the data set. 2.16 OC. The two values are nearly the same, so either of them could be used to best describe the roughness of the sampled pipe sections. O D. The mean should be used to describe the roughness of the sampled pipe sections because it is most descriptive of the "center" of the data set. 2.81 1.67 Done Click to select your answer(s). ?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Oil field pipes are internally coated in order to prevent corrosion. Researchers investigated the influence that coating may have on the surface roughness of oil field pipes. A scanning probe instrument was used to measure the surface roughness of each in a sample of 20 sections of coated interior pipe. The data (in micrometers)
are provided in the table below. Complete parts a through c.
1.04
1.55
2.53
2.29
2.69
1.62
2.41
1.74
1.78
2.71
1.75
2.91
2.78
1.89
2.77
1.38
1.13
2.16
2.81
1.67
a. Find and interpret the mean of the sample
x= micrometers
(Round to three decimal places as needed.)
Interpret the mean of the sample. Choose the correct answer below.
Please copy and paste data from text area below.
Selected delimiter: Tab
O A. Half of the values in the data set are greater than the value of the mean.
1.04
O B. The mean is the value of the average roughness in the data set.
O c. The mean is the value that occurs most often in the data set.
1.55
2.53
2.29
b. Find and interpret the median of the sample.
2.69
m = micrometers
1.62
(Round to three decimal places as needed.)
2.41
1.74
Interpret the median of the sample. Choose the correct answer below.
1.78
O A. The median is the value of the average roughness in the data set.
2.71
1.75
O B. The median is the value that occurs most often in the data set.
2.91
O C. Half of the values in the data set are greater than the value of the median.
2.78
1.89
c. Which measure of central tendency (the mean or the median) best describes the surface roughness of the sampled pipe sections? Explain.
2.77
1.38
O A. Neither the mean nor the median are descriptive of the "center" of the data set.
1.13
O B. The median should be used to describe the roughness of the sampled pipe sections because it is most descriptive of the "center" of the data set.
2.16
OC. The two values are nearly the same, so either of them could be used to best describe the roughness of the sampled pipe sections.
O D. The mean should be used to describe the roughness of the sampled pipe sections because it is most descriptive of the "center" of the data set.
2.81
1.67
Done
Click to select your answer(s).
?
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