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Graphing 101

Graphing 101. Graphing basics. Use: graph paper a ruler a pencil (be neat) Connect data points; use a line of best fit. Setting up a graph. DRY D ependent or R esultant variable on the Y -axis. MIX M anipulated or I ndependent variable on the X -axis.

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Graphing 101

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  1. Graphing 101

  2. Graphing basics • Use: graph paper a ruler a pencil (be neat) • Connect data points; use a line of best fit

  3. Setting up a graph • DRY • Dependent or Resultant variable on the Y-axis • MIX • Manipulated or Independent variable on the X-axis

  4. Labeling graphs • X and Y axis - what was measured & (unit of measurement) • First data point - on, or close to the y-axis • Descriptive title - states what is on both axes • You can use “dependent variable vs. independent variable”

  5. Plan intervals • Space equally • Determine total range of numbers – divide by the number of lines on your axis, then round up to the closest number that is easy to work with

  6. Types of graphs • Line graph: graphing change over time • Bar graph: comparing data of different groups • Pie chart: comparing parts of a whole (% that add to 100)

  7. US population by state

  8. Other types

  9. Set up a graph for each and include ALL graphing requirements.If appropriate, add a line that predicts what the data would look like. • Average monthly temperature in RI over 12 months • Types of birds at a bird feeder in December – chickadee (35%), mourning dove (10%), blue jay (40%), nuthatch (5%), cardinal (10%) • Polar bear population over the past 20 years

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