Difference between revisions of "FrequencyPolygon Command"

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<noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|chart}}
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{{Note|Frequency polygon is a line graph drawn by joining all the midpoints of the top of the bars of a histogram. Therefore usage of this command is the same as usage of [[Histogram Command]].}}
 
{{Note|Frequency polygon is a line graph drawn by joining all the midpoints of the top of the bars of a histogram. Therefore usage of this command is the same as usage of [[Histogram Command]].}}
; FrequencyPolygon[<List of Class Boundaries>, <List of Heights>]: Creates a frequency polygon with vertices in given heights. The class boundaries determine the x-coordinate of each vertex.
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{{Note|For examples see [[Histogram Command]].}}
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; FrequencyPolygon( &lt;List of Class Boundaries>, &lt;List of Heights> ): Creates a frequency polygon with vertices in given heights. The class boundaries determine the x-coordinate of each vertex.
; FrequencyPolygon[<List of Class Boundaries>, <List of Raw Data>, <Boolean Use Density>, <Density Scale Factor>(optional)]: Creates a frequency polygon using the raw  data. The class boundaries determine the x-coordinates of vertices and are used to determine how many data elements lie in each class. The y-coordinate of a vertex is determined as follows
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:{{Example| 1=<code>FrequencyPolygon({0, 1, 2, 3, 4, 5}, {2, 6, 8, 3, 1})</code> creates the corresponding line graph.}}
 
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* If ''Use Density = true'', height = (Density Scale Factor) * (class frequency) / (class width)  
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; FrequencyPolygon( &lt;List of Class Boundaries>, &lt;List of Raw Data>, <Boolean Use Density>, <Density Scale Factor (optional)> ): Creates a frequency polygon using the raw  data. The class boundaries determine the x-coordinates of vertices and are used to determine how many data elements lie in each class. The y-coordinate of a vertex is determined as follows
* If ''Use Density = false'', height = class frequency
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:* If ''Use Density = true'', height = (Density Scale Factor) * (class frequency) / (class width)  
 
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:* If ''Use Density = false'', height = class frequency
 
: By default,  Use Density = true and Density Scale Factor = 1.  
 
: By default,  Use Density = true and Density Scale Factor = 1.  
 
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;FrequencyPolygon[ <Boolean Cumulative>, <List of Class Boundaries>, <List of Raw Data>, <Boolean Use Density> , <Density Scale Factor> (optional) ]
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;FrequencyPolygon( <Boolean Cumulative>, &lt;List of Class Boundaries>, &lt;List of Raw Data>, <Boolean Use Density> , <Density Scale Factor (optional)> )
 
:If Cumulative is true this creates a frequency polygon where each vertex y-coordinate equals the frequency of the class plus the sum of all previous frequencies.
 
:If Cumulative is true this creates a frequency polygon where each vertex y-coordinate equals the frequency of the class plus the sum of all previous frequencies.
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{{Note|For further examples see [[Histogram Command]].}}

Latest revision as of 11:12, 3 October 2017


Note: Frequency polygon is a line graph drawn by joining all the midpoints of the top of the bars of a histogram. Therefore usage of this command is the same as usage of Histogram Command.


FrequencyPolygon( <List of Class Boundaries>, <List of Heights> )
Creates a frequency polygon with vertices in given heights. The class boundaries determine the x-coordinate of each vertex.
Example: FrequencyPolygon({0, 1, 2, 3, 4, 5}, {2, 6, 8, 3, 1}) creates the corresponding line graph.


FrequencyPolygon( <List of Class Boundaries>, <List of Raw Data>, <Boolean Use Density>, <Density Scale Factor (optional)> )
Creates a frequency polygon using the raw data. The class boundaries determine the x-coordinates of vertices and are used to determine how many data elements lie in each class. The y-coordinate of a vertex is determined as follows
  • If Use Density = true, height = (Density Scale Factor) * (class frequency) / (class width)
  • If Use Density = false, height = class frequency
By default, Use Density = true and Density Scale Factor = 1.


FrequencyPolygon( <Boolean Cumulative>, <List of Class Boundaries>, <List of Raw Data>, <Boolean Use Density> , <Density Scale Factor (optional)> )
If Cumulative is true this creates a frequency polygon where each vertex y-coordinate equals the frequency of the class plus the sum of all previous frequencies.
Note: For further examples see Histogram Command.
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