Quality Tools Homework Assignment
Every important activity in a value stream should be measured. A run chart is common tool used tomonitor these measurements over time. A run chart is alternatively called a time series chart or a trendchart. A run chart is basically a Statistical Process Control Chart without the upper and lower limits. For arun chart, the value stream measurement is displayed according to the Y axis and the time/sequence isdisplayed on the X axis.
A histogram is a tool to graphically display the frequency of the value stream measurements withoutregard for time. For a histogram, the value stream measurements are displayed on the X axis and thefrequency of the measurements, according to dimensional categories, are displayed on the Y axis. Thedescription of histogram on pages 63 and 65 in the text is misleading. These descriptions are more akinto a bar chart, or when the categories are organized from most frequent to least frequent, to a paretochart. A correct description of histogram, also called a frequency distribution chart, can be found athttp://www.socialresearchmethods.net/kb/statdesc.php, under the subheading section title TheDistribution, and including Tables 1 and 2.
When analysis of the values stream measurements using a run chart and a histogram indicate that theperformance is deficient, then the potential causes for “gaps” in performance can be analyzed with aCause-and-Effect Diagram.
When data are collected for these potential causes (or categories) of poor performance, then the datacan be displayed with a Pareto chart, visually indicating the cause/categories by number or percentage,with the cause/category with the greatest number/frequency in the far left column and thecause/category with the least number/percentage in the far right column.
Choosing some process activity which is measured, I am asking you to complete three out of the fourfollowing assignment deliverables. You choose which 3 to complete. Computer generated or hand drawsubmissions are accepted.
1. Create a run chart and make a comment about the performance.2. Create a histogram and make a comment about the performance.3. Brainstorm the potential causes of deficient performance using a cause-and-effect diagram, and
Every important activity in a value stream should be measured. A run chart is common tool used tomonitor these measurements over time. A run chart is alternatively called a time series chart or a trendchart. A run chart is basically a Statistical Process Control Chart without the upper and lower limits. For arun chart, the value stream measurement is displayed according to the Y axis and the time/sequence isdisplayed on the X axis.
A histogram is a tool to graphically display the frequency of the value stream measurements withoutregard for time. For a histogram, the value stream measurements are displayed on the X axis and thefrequency of the measurements, according to dimensional categories, are displayed on the Y axis. Thedescription of histogram on pages 63 and 65 in the text is misleading. These descriptions are more akinto a bar chart, or when the categories are organized from most frequent to least frequent, to a paretochart. A correct description of histogram, also called a frequency distribution chart, can be found athttp://www.socialresearchmethods.net/kb/statdesc.php, under the subheading section title TheDistribution, and including Tables 1 and 2.
When analysis of the values stream measurements using a run chart and a histogram indicate that theperformance is deficient, then the potential causes for “gaps” in performance can be analyzed with aCause-and-Effect Diagram.
When data are collected for these potential causes (or categories) of poor performance, then the datacan be displayed with a Pareto chart, visually indicating the cause/categories by number or percentage,with the cause/category with the greatest number/frequency in the far left column and thecause/category with the least number/percentage in the far right column.
Choosing some process activity which is measured, I am asking you to complete three out of the fourfollowing assignment deliverables. You choose which 3 to complete. Computer generated or hand drawsubmissions are accepted.
1. Create a run chart and make a comment about the performance.2. Create a histogram and make a comment about the performance.3. Brainstorm the potential causes of deficient performance using a cause-and-effect diagram, and
make a comment about the results of the analysis.4. Create a pareto chart based upon causes/categories of performance deficiency, and make acomment about the results of the analysis.
Your resources may include your own personal experience or first-hand observation, your interview ofsomeone with personal experience or first-hand observation, an article, case study, or web site. Do notcut and paste from any source, except for brief quotations that are properly cited.
Your resources may include your own personal experience or first-hand observation, your interview ofsomeone with personal experience or first-hand observation, an article, case study, or web site. Do notcut and paste from any source, except for brief quotations that are properly cited.
0 comments