Data Exploration & Visualization in Excel & Tableau - No Videos
- 1. Data Exploration & Visualization in Excel & Tableau Putting Your Safety Data to Work for You
- 2. Software • Cheap • Powerful for statistical analysis • Free or cheap • Quick for visualizations “See” what the data are not showing you
- 3. Project Log
- 4. Conditional Formatting for Blanks Steps: 1.Select the cells you want to format 2.Click 3.Click 4.Click 5.Select “Blanks”
- 5. Dummy Coding for Missing Data Steps: 1.Write if-statement of form: =IF(ISBLANK(_), 1, 0) 2.Copy it down 3.Write another of form: =IF(SUM(_:_)=0, 0, 1) 4.Copy it down
- 6. Loading Data Steps: 1.Select “Connect to a file” 2.Drag a sheet to the workspace 3.Click
- 7. Histogram: Near Misses w/o Binning
- 8. How to Make It Steps: 1.Drag Near Misses to the columns shelf: 2.Change Near Misses pill from “Measure” to “Dimension” 3.Drag Number of Records to the rows shelf:
- 9. Histogram: Near Misses w/ Binning
- 10. How to Make It Steps: 1.Click on Near Misses 2.Select “Create” > “Bins…” 3.Select 4.Drag to columns shelf 5.Drag Number of Records to rows shelf 6.While holding Command key, drag Number of Records to “Labels” on marks card
- 11. Histogram: Near Misses w/ Binning & Filtering by Hours
- 12. How to Make It Steps: 1.Click on by dimensions▼ dropdown 2.Click 3.Write if-statement: 4. Drag Hours Dummy to “Color” on marks card
- 13. Histogram: Near Misses w/ Binning & Filtering by Hours & Missing Data
- 14. How to Make It Steps: 1.Write if-statement: 2.Drag Hours & Missing Dummy to “Color” on marks card
- 15. Scatterplot: Hours by People
- 16. How to Make It Steps: 1.Drag People to column shelf: 2.Change it to dimension 3.Drag Hours to row shelf: 4.Change it to dimension 5.Right click data pane 6.Select “Trend Lines” > “Show Trend Lines” 7.Examine regression equation 8.Look for outliers
- 17. Scatterplot: Near Misses by Hours
- 18. How to Make It Steps: 1.Drag Hours to column shelf: 2.Change it to dimension 3.Drag Near Misses to row shelf: 4.Change it to dimension 5.Right click data pane 6.Select “Trend Lines” > “Show Trend Lines” 7.Examine regression equation 8.Look for outliers
- 19. Line Chart: Near Misses by Sector
- 20. How to Make It Steps: 1.Drag Month to the columns shelf: 2.Click on by Month▼ 3.Select 4.Drag Near Misses to rows shelf: 5.Drag Sector to “Color” on marks card
- 21. Line Chart: Accidents by Sector
- 22. How to Make It Steps: 1.Click on by Near▼ Misses 2.Select 3.Drag Accidents to columns shelf:
- 23. Incident Log
- 24. Loading New Data Steps: 1.Click 2.Select 3.Select “Connect to a file” 4.Drag a sheet to the workspace 5.Click
- 25. Tree Map: Incident Type
- 26. How to Make It Steps: 1.Drag Incident Type to rows shelf: 2.Drag Number of Records into table 3.In marks card, change measure from SUM() to AVG() 4.Click 5.Click 6.While holding Command key, drag Number of Records to “Labels” on marks card
- 27. Tree Map: Injury Cause
- 28. How to Make It Steps: 1.Drag Injury Cause to rows shelf: 2.Drag Number of Records into table 3.In marks card, change measure from SUM() to AVG() 4.Click 5.Click 6.While holding Command key, drag Number of Records to “Labels” on marks card
- 29. Text Analysis of Open- Ended Survey
- 30. How the Data Look
- 32. How to Make It Steps: 1.Drag measures to row shelf 2.Drag each pill to vertical axis of previous graph 3.Click to order columns 4.While holding Command key, drag Measure Names to “Colors” on marks card 5.Click 6.While holding Command key, drag Measure Values to “Labels” on marks card
- 33. Stacked Bar Chart: Sentiment by Department
- 34. How to Make It Steps: 1.Drag Department to columns shelf 2.Drag Measure Names to “Colors” on marks card 3.Drag Measure Values to rows shelf 4.Click on by Measure Names▼ 5.Select 6.While holding Command key, drag Measure Values to “Labels” on marks card
- 35. Questionnaire
- 37. How to Make It Steps: 1.Drag measures to row shelf 2.Drag each pill to vertical axis of previous graph 3.While holding Command key, drag Measure Names to “Colors” on marks card 4.While holding Command key, drag Measure Values to “Labels” on marks card
- 38. Bar Chart: Inspections by Department
- 39. How to Make It Steps: 1.Drag Inspections to rows shelf 2.Drag Department to columns shelf 3.While holding Command key, drag Department to “Colors” on marks card 4.While holding Command key, drag Inspections to “Labels” on marks card 5.While holding Command key, drag Inspections to “Size” on marks card 6.In marks card, change measure from AVG() to STDEV()
- 40. Loading Analysis Toolpack Steps: 1.Select ”Tools” > “Excel Add-ins” 2.Click
- 42. How to Run Them Steps: 1.Highlight cells 2.Click tab 3.Click 4.Select ”Descriptive Statistics” 5.Select 6.Click 7.Click
- 43. One-Way ANOVA: Inspections by Department
- 44. How to Run It Steps: 1.Create column for each department 2.Copy Inspections data into them 3.Highlight cells 4.Click tab 5.Click 6. Select “ANOVA: Single Factor” 7.Select 8.Click
- 46. How to Run It Steps: 1.Click tab 2.Click 3.Select ”t-test: Two-Sample” 4.Define 5.Define 6.Set 7.Click
- 47. Questions?