Difference between revisions of "FrequencyPolygon Command"
From GeoGebra Manual
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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. | ; 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| 1=<code>FrequencyPolygon[{0, 1, 2, 3, 4, 5}, {2, 6, 8, 3, 1}]</code> 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 | ; 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 = true'', height = (Density Scale Factor) * (class frequency) / (class width) |
Revision as of 10:55, 5 August 2015
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 examples see Histogram Command.