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Basic Tools for Process Improvement

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HISTOGRAM VIEWGRAPH 11<br />

Equal to or greater than the<br />

STARTING VALUE<br />

But less than the<br />

ENDING VALUE<br />

10<br />

360<br />

60<br />

420<br />

4<br />

9<br />

300<br />

60<br />

360<br />

6<br />

8<br />

240<br />

60<br />

300<br />

18<br />

7<br />

180<br />

60<br />

240<br />

20<br />

6<br />

120<br />

60<br />

180<br />

24<br />

5<br />

060<br />

60<br />

120<br />

22<br />

4<br />

000<br />

60<br />

060<br />

20<br />

3<br />

-060<br />

60<br />

000<br />

13<br />

2<br />

-120<br />

60<br />

-060<br />

5<br />

1<br />

-180<br />

60<br />

-120<br />

3<br />

INTERVAL<br />

NUMBER<br />

STARTING<br />

VALUE<br />

INTERVAL<br />

WIDTH<br />

ENDING<br />

VALUE<br />

NUMBER OF<br />

COUNTS<br />

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

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

How to Construct a Histogram

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