AP Statistics Curriculum 2007 EDA Freq

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===Summarizing data with Frequency Tables & Histograms===
===Summarizing data with Frequency Tables & Histograms===
There are two ways to describe a data set (sample from a population) - Pictorial Graphs or Tables of Numbers. Both are important for analyzing data.
There are two ways to describe a data set (sample from a population) - Pictorial Graphs or Tables of Numbers. Both are important for analyzing data.
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<center>[[Image:AP_Statistics_Curriculum_2007_IntroVar_Dinov_061407_Fig1.png|500px]]</center>
 
===Definitions===
===Definitions===
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===Computational Resources: Internet-based SOCR Tools===
===Computational Resources: Internet-based SOCR Tools===
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* TBD
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* [http://socr.ucla.edu/htmls/SOCR_Charts.html SOCR Charts] allows you to generate graphical representations (including frequency histograms) of a variety of datasets.
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===Examples===
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Computer simulations and real observed data.  
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* TBD
 
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===Hands-on activities===
===Hands-on activities===
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Step-by-step practice problems.  
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You can copy the first 2 columns in the data table above ans paste it in the [http://socr.ucla.edu/htmls/SOCR_Charts.html SOCR Charts] (BarChart --> XYPlot --> HistogramDemo7). You can see [[SOCR_EduMaterials_Activities_Histogram_Graphs | this SOCR Charts activity]] for help with histogram plots.
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* TBD
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<center>[[Image:SOCR_EBook_Dinov_EDA_012708_Fig1.jpg|500px]]</center>
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===References===
===References===
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* TBD
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* [http://www.stat.ucla.edu/%7Edinov/courses_students.dir/07/Fall/STAT13.1.dir/STAT13_notes.dir/lecture02.pdf Lecture notes on EDA]
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Revision as of 19:18, 27 January 2008

Contents

General Advance-Placement (AP) Statistics Curriculum - Summarizing data with Frequency Tables

Summarizing data with Frequency Tables & Histograms

There are two ways to describe a data set (sample from a population) - Pictorial Graphs or Tables of Numbers. Both are important for analyzing data.

Definitions

  • A frequency distribution is a display of the number (frequency) of occurrences of each value in a data set.
  • A relative frequency distribution is a display of the percent (ratio or frequency to sample-size) of occurrences of each value in a data set.

Example

Stage of disease at diagnosis of breast cancer in a random sample of US women.

Stage Frequency Relative Frequency
0 197 0.09
I 691 0.33
II 703 0.34
III 314 0.15
IV 187 0.09
Total 2092 1.00

Computational Resources: Internet-based SOCR Tools

  • SOCR Charts allows you to generate graphical representations (including frequency histograms) of a variety of datasets.

Hands-on activities

You can copy the first 2 columns in the data table above ans paste it in the SOCR Charts (BarChart --> XYPlot --> HistogramDemo7). You can see this SOCR Charts activity for help with histogram plots.


References




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