SOCR EduMaterials Activities EventFrequency - Revision history

PriscillaChui: /* Description */

2008-05-05T15:34:36Z

‎Description

PriscillaChui: /* Background */

2008-05-05T15:03:57Z

‎Background

PriscillaChui at 16:59, 8 September 2007

2007-09-08T16:59:52Z

PriscillaChui at 13:40, 6 September 2007

2007-09-06T13:40:53Z

New page

== EVENT FREQUENCY ==

==Background ==

The Event Frequency displays the number of repetitions or occurrences of one or more events over a period of time. Data values are usually in XY-coordinate form where the horizontal axis represents the independent variable and the vertical axis is the frequency of an event. These charts have a large range of sizes as they may represent data of small numbers of events to large numbers of events. In times, certain values may overlap on the chart as they are repeated in the data set.

For references, visit [http://en.wikipedia.org/wiki/Frequency Wikipedia].

== Description ==

Go to the [http://socr.ucla.edu/htmls/SOCR_Charts.html SOCR Charts] and select Miscellaneous from the items located on the left, then select Event Frequency Demo:

<center>[[Image:SOCR Activitites Miscellaneous Event Frequency Chui 090507 Fig1.jpg|400px]]</center>

Note that in this demonstration, there are three events as stated in the legend located at the bottom of the chart. The horizontal axis has the independent values and the vertical axis represents the dependent values. Every event has different values and are typically independent of one another.

For Event Frequency presentations, when used with a large set of data that are visually grouped within the chart, it will allow observers to easily distinguish trends among the different events.

== Applications ==

One of the most persuasive elements when proposing data and literature to others is a well-designed chart presentation.

Companies may use this application to illustrate the number of persons who purchase their products on a daily or monthly basis.

Suppose students would like to demonstrate the number of peers who purchase lunch during school on a daily basis to show which day of the week promotes the most income for the school.

{{translate|pageName=http://wiki.stat.ucla.edu/socr/index.php?title=SOCR_EduMaterials_Activities_BallotExperiment}}

← Older revision		Revision as of 15:34, 5 May 2008
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	For Event Frequency presentations, when used with a large set of data that are visually grouped within the chart, it will allow observers to easily distinguish trends among the different events.		For Event Frequency presentations, when used with a large set of data that are visually grouped within the chart, it will allow observers to easily distinguish trends among the different events.
		+
		+	== Examples & Exercises ==
		+	*'''Exercise 1:''' Suppose you are given the frequencies of earth quakes along the west coast and east coast. Use SOCR Charts event frequency to show the data information.
		+	*'''Exercise 2:''' Can conclusions be drawn from event frequency diagrams?

	== Data Type and Format ==		== Data Type and Format ==

← Older revision		Revision as of 15:03, 5 May 2008
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	For references, visit [http://en.wikipedia.org/wiki/Frequency Wikipedia].		For references, visit [http://en.wikipedia.org/wiki/Frequency Wikipedia].
		+
		+	== Summary==
		+	This exercise describes the use and construction of the event frequency in SOCR. The applets can be accessed at [http://www.socr.ucla.edu/htmls/SOCR_Charts.html SOCR Charts] under the Miscellaneous folder.
		+
		+	== Goals ==
		+	The aims of this activity are to:
		+	* describe how to use the event frequency in SOCR
		+	* discuss its use in daily activities

	== Description ==		== Description ==

← Older revision		Revision as of 16:59, 8 September 2007
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	For Event Frequency presentations, when used with a large set of data that are visually grouped within the chart, it will allow observers to easily distinguish trends among the different events.		For Event Frequency presentations, when used with a large set of data that are visually grouped within the chart, it will allow observers to easily distinguish trends among the different events.
		+
		+	== Data Type and Format ==
		+
		+	By clicking '''Data''' between the ''Graph'' and ''Mapping'' button, it allows users to input or vary the values of the data set. For Event Frequency Charts, only the independent and dependent variable values are needed. The independent variable is typically categorical (e.g., Dates, Requirements, Events, etc.) and the dependent variable is typically numerical but may also be categorical (e.g., Values, Dates, Colors, Total Sum, etc.). The image below demonstrates the structure of the data:
		+
		+	<center>[[Image:SOCR Activitites Miscellaneous Event Frequency Chui 090807 Fig2.jpg\|400px]]</center>

	== Applications ==		== Applications ==