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Basic Tools for Process Improvement

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HISTOGRAM VIEWGRAPH 36<br />

Equal to or greater than<br />

the STARTING VALUE<br />

But less than<br />

the ENDING VALUE<br />

1 155 + 15 170 3<br />

2 170 + 15 185 7<br />

3 185 + 15 200 11<br />

4 200 + 15 215 12<br />

5 215 + 15 230 26<br />

6 230 + 15 245 22<br />

7 245 + 15 260 12<br />

8 260 + 15 275 8<br />

9 275 + 15 290 3<br />

10 290 + 15 300 1<br />

INTERVAL STARTING INTERVAL ENDING NUMBER<br />

NUMBER VALUE WIDTH VALUE OF COUNTS<br />

Step 7 - Count the number of points in each interval<br />

Step 6 - Determine the starting point of each interval<br />

EXERCISE 2 ANSWER KEY

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