Measurements and Control Limits
Not what you're looking for?
A new machine has just been installed to cut and rough-shape large slugs. The slugs are
then transferred to a precision grinder. One of the critical measurements is the outside diameter.
The quality control inspector randomly selected five slugs each hour, measured the
outside diameter, and recorded the results. The measurements (in millimeters) for the period
8:00 A.M. to 10:30 A.M. follow.
Outside Diameter (millimeters)
Time 1 2 3 4 5
8:00 87.1 87.3 87.9 87.0 87.0
8:30 86.9 88.5 87.6 87.5 87.4
9:00 87.5 88.4 86.9 87.6 88.2
9:30 86.0 88.0 87.2 87.6 87.1
10:00 87.1 87.1 87.1 87.1 87.1
10:30 88.0 86.2 87.4 87.3 87.8
a. Determine the control limits for the mean and the range.
b. Plot the control limits for the mean outside diameter and the range.
Purchase this Solution
Solution Summary
The solution examines measurements for control limits for the mean and range of data sets. These control limits are plotted.
Purchase this Solution
Free BrainMass Quizzes
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.