Graphing and Data Analysis

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Graphing and Data Analysis

• EDN 322

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Statistical Investigation

• Pose a question
• Collect data to answer the question
• Display the collected data
• Analyze and communicate the results

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Questions yield two types of data

• Categorical
• Numerical

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Data Collection Methods

• Surveys
• Experiments
• Simulations
• Sampling

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Bar Graph
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Picture Graph
Favorite Breakfast Foods
2 students
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Line Graph
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Pie or Circle Graph
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Line Plot
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The Stem and Leaf Plot  
Data  62 72 36 78 76 72 59 15 90 61 74 52 64 73
76 72 63 60 79 76 63 76 76 84 60 71 70 54 65 74
87 60 81 1 5 2  3 6 4  5
249 6 000123345 7 012223446666689 8
147 9 0
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Box and Whiskers
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Ways to Describe the Data

• Range
• Three kinds of averages (Measures of Central
  Tendency)
• Mode
• Median
• Mean

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Mathematics Curriculum Grade K
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Mathematics Curriculum Grade 1
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Mathematics Curriculum Grade 2
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Mathematics Curriculum Grade 3
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Mathematics Curriculum-Grade 4
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Mathematics Curriculum Grade 5