1. thurso high school Graphs and Charts

2. Graphs A GRAPH (or Line Graph) connects a series of plotted points. The graph depicts trends or movement over a period of time. WHEN TO USE: To show trends or movements rather than amounts To Illustrate long series of data To compare series of data To predict trends or movement WHEN NOT TO USE: When the emphasis is on amounts When relative size or difference is required

3. Enhancing Graphs

4. BAR CHARTS A BAR CHART compares qualities or values which are not time related. WHEN TO USE: To compare the magnitude or size. To illustrate trends or movement WHEN NOT TO USE: Physical qualities such as size or weight work best vertically. Comparison of the magnitude of a number of items work best horizontally.

5. Enhancing Bar Charts

6. PIE CHARTS A PIE CHART is used to show relative values as a whole WHEN TO USE: To show approximate relative values of component parts of a whole. To compare component parts WHEN NOT TO USE: Charts with 7 or more components are usually confusing and difficult to interpret To show large numbers of components in a part. When the values of a number of component parts are small

7. Enhancing Pie Charts

8. PICTOGRAM Pictograms may be considered a type of BAR graph WHEN TO USE: When items by be represented by symbols or pictures. WHEN NOT TO USE: Values or sizes are represented by symbols or pictures directly related to the information being conveyed. When symbols or pictures are unclear or obscure.

9. Enhancing Pictograms

10. PowerPoint Presentation. 2003