Basic Tools for Process Improvement
Basic Tools for Process Improvement
Basic Tools for Process Improvement
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Interval<br />
Width<br />
<strong>Basic</strong> <strong>Tools</strong> <strong>for</strong> <strong>Process</strong> <strong>Improvement</strong><br />
Equal to or greater than<br />
the STARTING VALUE<br />
EXERCISE 1 ANSWER KEY<br />
Step 5 - Compute the interval width<br />
=<br />
Range<br />
Number of<br />
Intervals<br />
Use 8 <strong>for</strong> the number<br />
of intervals<br />
28<br />
= =<br />
8<br />
HISTOGRAM VIEWGRAPH 28<br />
EXERCISE 1 ANSWER KEY<br />
Step 6 - Determine the starting point of each interval<br />
Step 7 - Count the number of points in each interval<br />
INTERVAL STARTING INTERVAL ENDING NUMBER<br />
NUMBER VALUE WIDTH VALUE OF COUNTS<br />
1 4 + 4 8 3<br />
2 8 + 4 12 20<br />
3 12 + 4 16 20<br />
4 16 + 4 20 20<br />
5 20 + 4 24 10<br />
6 24 + 4 28 5<br />
7 28 + 4 32 1<br />
8 32 + 4 36 1<br />
But less than<br />
the ENDING VALUE<br />
HISTOGRAM VIEWGRAPH 29<br />
3.5<br />
Round up<br />
to 4<br />
HISTOGRAM 27
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