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Wiki source code of 04 Test-Variablen verwenden

Last modified by Carina Enke on 13.02.2024
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4 Using **test variables** enables the creation of adaptive tests and related thematic complexes.
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6 Specifically, the following scenarios are feasible:
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8 * Related question complexes can be parameterised by common, global variables (test variables). The random values allow for different question values in each test attempt and for each participant.
9 * Learner answers, performance and identified "typical" or systematic mistakes made by the learners can be stored and taken into account for later questions.
10 * More detailed information on the users’ performance as regards the individual questions can be generated during the test and collected as the basis for a personalised overall assessment (test feedback).
11 * Initially, participants can configure specific settings (e. g. for the difficulty level and thematic focus) themselves, which will then be stored in global variables and affect subsequent questions.
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13 To implement such scenarios, you can choose between two different types of [[question variables>>doc:ONYX.Erstellung von Testinhalten.Aufgaben.Variablen verwenden.WebHome]] in the Variables tab:
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15 * **Pre-processed variables**
16 Pre-variables are assigned before the test questions will be displayed. The randomly generated values can be linked to question variables and used in all test content.
17 * **Post-processed variables**
18 Post-variables will only be assigned after the questions have been answered, submitted and automatically assessed, thus providing access to response-specific values such as the learners’ answers or the number of points for correct answers. The generated values can also be used for follow-up questions.
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30 {{panel borderColor="#ddd" borderStyle="solid" title="Using question variables"}}
31 * [[(% class="confluence-link" %)Definition of a variable>>doc:ONYX.Erstellung von Testinhalten.Aufgaben.Variablen verwenden.WebHome]]
32 * [[(% class="confluence-link" %)Use of variables>>doc:ONYX.Erstellung von Testinhalten.Aufgaben.Variablen verwenden.WebHome]]
33 * [[(% class="confluence-link" %)Definition of a condition>>doc:ONYX.Erstellung von Testinhalten.Aufgaben.Variablen verwenden.WebHome]]
34 * [[(% class="confluence-link" %)Expert mode IMS QTI>>doc:ONYX.Erstellung von Testinhalten.Aufgaben.Variablen verwenden.WebHome]]
35 * [[(% class="confluence-link" %)View variable assignment>>doc:ONYX.Erstellung von Testinhalten.Aufgaben.Variablen verwenden.WebHome]]
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38 {{panel borderColor="#ddd" bgColor="#f0f0f0" borderStyle="solid" title="Related topics"}}
39 * [[Calculation interaction>>doc:ONYX.Erstellung von Testinhalten.Aufgabentypen.Berechnungsaufgabe.WebHome]]
40 * [[Formula comparison>>doc:ONYX.Erstellung von Testinhalten.Aufgabentypen.Formelvergleich.WebHome]]
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43 {{panel borderColor="#ddd" bgColor="#f0f0f0" borderStyle="solid" title="More information"}}
44 * [[MAXIMA manual>>url:http://maxima.sourceforge.net/docs/manual/de/maxima.html||shape="rect"]]
45 * [[MAXIMA good practice examples>>url:https://bildungsportal.sachsen.de/opal/auth/RepositoryEntry/5499682817/CourseNode/93229879750473/wiki/Index||shape="rect"]]
46 * [[MAXIMA system information>>url:http://maxima.sourceforge.net/||rel="nofollow" shape="rect" class="external-link"]]
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53 == Pre-processed variables ==
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55 Here you can define test variables, which are determined before the questions will be displayed (in short: pre-variables). If you wish to use these test variables as random parameters in your questions, they need to be linked to question variables. The value is assigned before the first question will be displayed. Please note that all variable assignments in the question will override the linked values.
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58 The following examples for using (pre-processed) test variables demonstrate possible application scenarios:
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60 * [[Example test “Transport” - Use of random values in related questions>>doc:.Beispiele zur Nutzung von Test-Variablen.Beispieltest Transport - Einsatz von Zufallwerten.WebHome||shape="rect"]]
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63 == Post-processed variables ==
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65 Define test variables, which will be recalculated each time after submitting a question (in short: post-variables). The value calculation may include values determined during the test, such as the participant's responses, score or the number of attempts made. This allows to monitor points and errors, and thus to control subsequent questions, hints or feedback content.
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67 == Variable types ==
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69 The following variable types are available for test variables:
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71 * [[Numerical variables>>doc:ONYX.Erstellung von Testinhalten.Aufgaben.Variablen verwenden.Numerische Variablen.WebHome]]:
72 ** Integer
73 ** Floating point
74 * [[Text variables>>doc:ONYX.Erstellung von Testinhalten.Aufgaben.Variablen verwenden.Text Variables.WebHome]]
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