Graphing

When to Graph Your Data

When "a picture could tell billions of words" To impress people

Dramatize a research finding Some people think visually To emphasize something that numbers can't

communicate well

Scatter Plot - Raw Data

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Number of Drinks

Number of Errors

Histogram - Raw Data

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Response Scale Value

Number of Responses

Should not have gaps

Column Graph - Categorical Independent Variable

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Psychology CivilEngineering

Physics

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Importance

SexDrugsRock-n-Roll

Line Graph - All Kinds of Data

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Melbourne Palm Bay Kissimmee

City

Number/Square Block

Air BoatsRednecks

Circle/Pie Graph - Category Proportions

48%

25%

12%

15% PsychologyBusinessCommunicationsScience Education

Errors

3-D Color Busy

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Psychology CivilEngineering

Physics

SexDrugsRock-n-Roll

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Psychology CivilEngineering

Physics

Major

Importance

Sex

Drugs

Rock-n-Roll

Where Graphs Come From

Data analysis programs SPSS (Statistical Package for the Social

Sciences) Dedicated graphing software

DeltaGraph Spreadsheets Graphing utilities in other programs

Word, PowerPoint Called “chart”

Not all Figures are Graphs

Charts Communicate concepts pictorially Organizational chart Process chart (next slide)

Drawing Photographs

Chart

Chart Area

Plot Area

Parts

Legend

X (Category) axis

Y (Value) axis

Tick Mark

Tick Mark Label/ Categ Label Categ Axis Title

Value Axis Title

Data series

Symbol

Line

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Melbourne Palm Bay Kissimmee

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Number/Square Block

Air BoatsRednecks

Y axis scale