Graphing Power Pt
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Bar graphs and line graphs are used to visualize data with one continuous variable such as time on the x-axis and another on the y-axis. Circle graphs are used to show categorical data divided into percentages of a whole. Graphs created on computers are neat, accurate, and quick to make compared to hand-drawn graphs. An example lab involves students sorting and counting M&M colors to create a data table and bar graph to analyze the results.
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Graphing Power Pt
- 1. Graphs Bar Graphs Line graphs (connect) used when manipulated variable continuous (like time) interpolate extrapolate
- 2. Interpreting Data Bar and Line Graphs (DRY MIX) horizontal=x-axis=manipulated (or independent) variable vertical=y-axis=responding (or dependent) variable be sure to label each axis, include units equal spacing (don’t have to start at zero) include title and key colorful and neat
- 3. Why graph on computers? Neatness Accuracy Quickness
- 4. Graphs--continued Circle (pie) graph use protractor or computer when you have data for all categories to make up given topic include label as well as % and/or degrees for each slice different color per slice partial X 360 ° total
- 5. OPT--M&M lab As a group, write your names on a dixie cup, then count out 36 M&M’s. Sort the M&M’s by color and make a data table. Tell Mrs. McMullan how many reds you have. Make a data table and bar graph (circle graph later) for the 36 M&M’s (do not eat any until everything is finished and checked—tomorrow?) Part 2: make with computer (Excel)—in a couple of days