AP Statistics Curriculum 2007 EDA Freq

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===Summarizing data with Frequency Tables & Histograms===
===Summarizing data with Frequency Tables & Histograms===
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Example on how to attach images to Wiki documents in included below (this needs to be replaced by an appropriate figure for this section)!
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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>
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===Approach===
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<center>[[Image:AP_Statistics_Curriculum_2007_IntroVar_Dinov_061407_Fig1.png|500px]]</center>
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Models & strategies for solving the problem, data understanding & inference.  
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* TBD
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===Definitions===
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* A '''frequency distribution''' is a display of the number (frequency) of occurrences of each value in a data set.
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* 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.
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===Model Validation===
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===Example===
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Checking/affirming underlying assumptions.  
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Stage of disease at diagnosis of breast cancer in a random sample of US women.
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* TBD
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{| class="wikitable"
 +
|-
 +
! 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===
===Computational Resources: Internet-based SOCR Tools===

Revision as of 19:07, 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

  • TBD

Examples

Computer simulations and real observed data.

  • TBD

Hands-on activities

Step-by-step practice problems.

  • TBD

References

  • TBD



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