# 3) Rockwell hardness testing is an indentation testing method. The indenter used is either a spheroconical diamond or a hard steel ball. An experiment was designed to determine if different brands of conical diamond tips used for Rockwell hardness testing of AISI 1018 mild/low carbon steel yield different hardness readings. Two different brands of diamond tips were used to find the hardness on a sample of mild/low carbon steel, the hardness readings (RC) are given below: Brand 1 Brand 2 70 72 70 72 72 71 71 71 70 72 70 73 70 Is there a difference in the variability between the two different brands?
# 3) Rockwell hardness testing is an indentation testing method. The indenter used is either a spheroconical diamond or a hard steel ball. An experiment was designed to determine if different brands of conical diamond tips used for Rockwell hardness testing of AISI 1018 mild/low carbon steel yield different hardness readings. Two different brands of diamond tips were used to find the hardness on a sample of mild/low carbon steel, the hardness readings (RC) are given below: Brand 1 Brand 2 70 72 70 72 72 71 71 71 70 72 70 73 70 Is there a difference in the variability between the two different brands?
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:#3) Rockwell hardness testing is an indentation testing method. The indenter used is
either a spheroconical diamond or a hard steel ball. An experiment was designed to
determine if different brands of conical diamond tips used for Rockwell hardness
testing of AISI 1018 mild/low carbon steel yield different hardness readings. Two
different brands of diamond tips were used to find the hardness on a sample of
mild/low carbon steel, the hardness readings (RC) are given below:
IT
Brand 1 Brand 2
70
72
70
72
71
72
71
71
70
72
70
73
70
Is there a difference in the variability between the two different brands?
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