Applet 4, The Ruling, will be extended with the special (formal) utility curve of the Last Test where there are some negative points that yet have to be compensated for. This is planned for the last week of December, 2005. This extension will have no consequences for the strategy curves in the applets 8 and 9, because they get evaluated using pure threshold curves at different score levels on the LT.

(Advanced) applets 8 and 9, as well as the chapters, are currently (Dec. '05) under revision, the current routines have not yet been tested adequately.

The guessing parameter is not yet available in applets 3 and higher.

The proper working of stratified sampling in the higher applets has not been checked for a long time now, be not amazed to get rubbish as results.

If you come across an applet that is not functioning properly, please mail me. It is not possible always to check all applets for unintended consequences of changes in classes. As this is a project in progress, such changes are made on a routine basis.

Applets are known to work correctly under:
Internet Explorer under Windows XP
Firefox 1.0.7 under Windows XP
Safari 1.2 under MacOSX 10.3.9
FireFox 1.5.0.4 under MacOSX 10.3.9

It might be the case that the applets do not open properly in browsers under Windows, or in browsers other than Safari under MacOS X: the applet field remains gray or blank. Be sure that Java is allowed. It might also be necessary to allow pop-ups! (see the preferences menu of your browser)
In module chapters original applets have been replaced by screenshots; therefore applet problems should not hinder readers of the SPA project. Readers not able to use the applets in their browser, and yet willing to do so, may contact me, if preferences of the browser pertaining to Java do not seem to be the problem.

Information about Java, and applets in particular:
http://java.sun.com
http://java.sun.com/applets/

MacOS X: There is a problem with Java versions 1.4 for browsers other than Safari. See http://javaplugin.sourceforge.net/Readme.html; http://developer.apple.com/documentation/Java/Conceptual/Java131Development/deploying/chapter_3_section_5.html; simile.mit.edu/repository/ misc/java_embedding_plugin/readme.rtf
MacOS X: Opera, version 8.5, produces 'java.lang.UnsupportedClassVersionError: Spa_BinomialApplet (Unsupported major.minor version 48.0)
MacOS X: Internet Explorer 5.2 for Mac, [preferences: enable Java on; cookies: never ask; web content: enable plug-ins on] produces 'java.lang.UnsupportedClassVersionError: Spa_BinomialApplet (Unsupported major.minor version 48.0)

Windows: Java Applet plug-in makes it possible for your computer (including Windows® XP, Me, NT, 2000, 98, or 95) to run applets in your browser. http://www.mcdonalds.com/search/help/plug_play/sunmicro.html

Strategic preparation for achievement testing

Applets

Ben Wilbrink

For the text on the SPA model see the project.





applets     advanced applets         other applets

    1         1a    Generator         1o. 1oa advanced
    2         2a    Mastery Envelope
    3         3a    Predictor
    4         4a    Ruling
    5         5a    Learning
    6         6a    Expectations        6b. special 6.1a.  advanced
    7         7a    Last Test
    8         8a    Strategy
    9         9a True Utility

the applets

Module 1 The Generator: Insecurity quantified

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the generator

menu items


Module 2 The Mastery Envelope: the Likelihood of it all

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Figure 1 likelihood2.1.1.gif

new menu items



Module 3 The Predictor: Place your bets



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new menu items



Module 4 The Ruling: about grades and their uses

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new menu items



Module 5 Learning: Curves of Insight



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new menu items



Module 6 Expectations: Expected Utility along the Learning Path

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new menu items


Special applet 6.1

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new menu items


Module 7 The Last Test Strategy


The opening picture may show a plot on different specifications, start the applet to see the plot corresponding to the menu specifications shown

new menu items



Module 8 The Strategist: Optimal stopping


new menu items





Module 9 True Utility: What the result is worth (the student's calculation)


new menu items








Advanced applet 1

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new menu items




Advanced applet 2

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new menu items





Advanced applet 3

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new menu items

In fact, this is the advanced applet belonging to the Expectations module 6. It contains utility and learning parameters. To use it as the advanced applet for immediate predictions, put the value(s) for the number of episodes at one.





Advanced applet 4

Module 4 The Ruling: about grades and their uses

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Advanced applet 5a

There is no such applet, the normal applet 5allows second set analyses and options. Or use the advanced applet 8a instead.



Advanced applet 6a

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new menu items


Advanced special applet 6.1a

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Module 8 The Strategist: Optimal stopping

Advanced applet 7a/8a


new menu items



Mail your opinion, suggestions, critique, experience on/with the SPA


January 25, 2012 \ contact ben at at at benwilbrink.nl


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