Basic Tools for Process Improvement

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Basic Tools for Process Improvement Step 8 - Plot the data. A more precise and refined picture comes into view once you plot your data (Viewgraph 12). You bring all of the previous steps together when you construct the graph. ! The horizontal scale across the bottom of the graph contains the intervals that were calculated previously. ! The vertical scale contains the count or frequency of observations within each of the intervals. ! A bar is drawn for the height of each interval. The bars look like columns. ! The height is determined by the number of observations or percentage of the total observations for each of the intervals. ! The Histogram may not be perfectly symmetrical. Variations will occur. Ask yourself whether the picture is reasonable and logical, but be careful not to let your preconceived ideas influence your decisions unfairly. Step 9 - Add the title and legend. A title and a legend provide the who, what, when, where, and why (also illustrated in Viewgraph 12) that are important for understanding and interpreting the data. This additional information documents the nature of the data, where it came from, and when it was collected. The legend may include such things as the sample size, the dates and times involved, who collected the data, and identifiable equipment or work groups. It is important to include any information that helps clarify what the data describes. 14 HISTOGRAM
S H O T C O U N T LEGEND: 25 20 15 10 5 0 Basic Tools for Process Improvement How to Construct a Histogram Step 8 - Plot the data Step 9 - Add the title and legend MISS DISTANCE FOR MK 75 GUN TEST FIRING MISSES -180 -120 -060 000 060 120 180 240 300 360 420 YARDS SHORT TARGET HITS YARDS LONG MISSES USS CROMMELIN (FFG-37), PACIFIC MISSILE FIRING RANGE, 135 BL&P ROUNDS/MOUNT 31, 25 JUNE 94 HISTOGRAM VIEWGRAPH 12 HISTOGRAM 15
Page 1 and 2: Basic Tools for Process Improvement
Page 3 and 4: 100 80 60 40 20 0 Basic Tools for P
Page 5 and 6: 4 5 F R E Q U E N C Y 100 80 60 40
Page 9 and 10: How to Construct a Histogram Step 1
Page 13: Interval Width Step 5 - Compute the
Page 17 and 18: Interpreting Histograms Location an
Page 19 and 20: Target Interpreting Histograms Proc
Page 23 and 24: Interval Width Basic Tools for Proc
Page 25 and 26: EXERCISE 1 ANSWER KEY Step 1 - Coun
Page 27 and 28: Interval Width Basic Tools for Proc
Page 33 and 34: NO. OF PERSONNEL 30 25 20 15 10 5 0
Page 35 and 36: HISTOGRAM VIEWGRAPH 1 • A bar gra
Page 37 and 38: HISTOGRAM VIEWGRAPH 3 5 1 Title 2 H
Page 39 and 40: HISTOGRAM VIEWGRAPH 5 Step 9 - Add
Page 41 and 42: HISTOGRAM VIEWGRAPH 7 410 1 - 180 1
Page 43 and 44: HISTOGRAM VIEWGRAPH 9 More than 250
Page 45 and 46: HISTOGRAM VIEWGRAPH 11 Equal to or
Page 47 and 48: HISTOGRAM VIEWGRAPH 13 Target Targe
Page 49 and 50: HISTOGRAM VIEWGRAPH 15 Target Targe
Page 51 and 52: HISTOGRAM VIEWGRAPH 17 TOTAL NUMBER
Page 53 and 54: HISTOGRAM VIEWGRAPH 19 Range of val
Page 55 and 56: HISTOGRAM VIEWGRAPH 21 Round up to
Page 57 and 58: HISTOGRAM VIEWGRAPH 23 Step 8 - Plo
Page 59 and 60: HISTOGRAM VIEWGRAPH 25 % FAT NO. OF
Page 61 and 62: HISTOGRAM VIEWGRAPH 27 More than 25
Page 63 and 64: HISTOGRAM VIEWGRAPH 29 Equal to or
Page 65 and 66:
HISTOGRAM VIEWGRAPH 31 TOTAL = 105
Page 67 and 68:
HISTOGRAM VIEWGRAPH 33 Range of val
Page 69 and 70:
HISTOGRAM VIEWGRAPH 35 Round up to
Page 71:
HISTOGRAM VIEWGRAPH 37 LEGEND: MCBH
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Basic Tools for Process Improvement

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