Alissa Fong

**MA, Stanford University**

Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

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If we have a frequency table that tells us how many individuals are in a given category, we can represent that data in a bar graph or a pie chart. For a bar graph, create a vertical axis that represents frequency, and a horizontal axis that has categories. We draw bars to show how many individuals were in that category. The bars should be equally wide and have spaces between them. We could also turn each category into a percent out of total and draw pieces of a pie chart that represent that percent. Ideally, we would write a proportion to figure out how many degrees to make each piece ( data/total = degrees/360) and use a protractor to draw each piece perfectly. A pie chart represents percent out of a whole, so the percentages should all sum to 100%. Make sure your graph has a title and units labeled!

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