1. Illustrations

2. Why use visual aids? Repetition: Repetition: –Explaining a message in different forms reinforces it. Accelerates communication: Accelerates communication: –A clear illustration can communicate an idea at a glance.

3. Use a visual aid: When words alone are impossible or inefficient for the task at hand. When words alone are impossible or inefficient for the task at hand. To summarize or emphasize a point. To summarize or emphasize a point. To present data described in the text. To present data described in the text.

4. When Words are Inefficient: Surgeon’s End Loop Knot - Text 1. Form a loop at the end of the line. 2. With the loop, tie an overhand knot. 3. Pass the loop through a second time. 4. Adjust the loop size. 5. Lubricate and pull the knot tight. 6. Trim the end.

5. When Words are Inefficient: Surgeon’s End Loop Knot - Illustrated

6. To Emphasize a Point: Text “Check your spelling and grammar before printing the Final Draft.” “Check your spelling and grammar before printing the Final Draft.”

7. To Emphasize a Point: Illustration –Check your spelling and grammar before printing the Final Draft.

8. To Present Data

9. Meaningful Graphics Pick the useful graphic. Pick the useful graphic.

10. Charts: Graphs Simple, visual representation of data Simple, visual representation of data

11. Charts: Bar graphs Simple Bar Graph Simple Bar Graph Complex Bar Graph Complex Bar Graph

12. Charts: Histogram A type of bar chart A type of bar chart Typically used to show distribution of a data set Typically used to show distribution of a data set

13. Charts: Pie charts Show relationships among items that total 100% Show relationships among items that total 100% Standard Pie Chart Standard Pie Chart Exploded Pie Chart Exploded Pie Chart

14. Pie Charts (cont.) What information is missing? What information is missing?

15. Charts: Scatterplot What is the relationship between the time between eruptions and their duration? What is the relationship between the time between eruptions and their duration?

16. Charts: Box plot Shows a summary of data: Shows a summary of data: –Smallest non-outlier observation –Lower quartile –Median –Mean –Upper Quartile –Largest non-outlier observation

17. Tables Useful for presenting data Useful for presenting data Less visual, better for reference Less visual, better for reference

18. Line Drawing

19. Labeled Line Drawing

20. Compare to: Photographs

21. Animations

22. Any questions? Any questions?