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Published byEileen Brown Modified over 9 years ago

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Graphing 101

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Graphing basics Use: graph paper a ruler a pencil (be neat) Connect data points using a line or curve of best fit

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

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

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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 Plan intervals

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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)

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US population by state

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Other types

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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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