Applied Measurement with jMetrik by J. Patrick Meyer

By J. Patrick Meyer

jMetrik is a working laptop or computer software for enforcing classical and glossy psychometric equipment. it really is designed to facilitate paintings in a construction atmosphere and to make complicated psychometric systems available to each dimension practitioner. Applied size with jMetrik reviews psychometric conception and describes the way to use jMetrik to behavior a complete psychometric research. every one bankruptcy specializes in an issue in size, describes the stairs for utilizing jMetrik, and gives a number of examples of carrying out an research at the subject. techniques and suggestions for perform is equipped during the book.

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3, 2, 1, 0). These four examples show various ways polytomous items can be quickly scored in the Basic Item Scoring dialog. Not Items To tell jMetrik that a variable is not an item, do not provide a value for the answer key or number of response options. You can remove scoring for an item in the same way. If you would like to clear the scoring information and convert an item to a “Not Item,” then delete the answer key entry and value for the number of response options. Handling Errors in Basic Item Scoring It is possible for users to input the wrong information in basic item scoring.

Type the not reached code in the option column and the value “NR” (without quotes) in the score column. “NR” is also a reserved value and cannot be used as a response option in your data table. As noted earlier, omitted and not reached codes are not fully implemented in version 3. 9 shows and example of advanced item scoring. The option O is specified as the omit code, and the option N is specified as the not reached code. Note that special codes are provided in this example, but they are not required in advanced item scoring.

The sum score is so common in testing that the terms raw score and sum score are often used interchangeably. However, there are other transformations of the item scores including the average score, percent correct score, and Kelley’s regressed score. The average score is simply the total number of points awarded for each test item divided by the total number of points possible on the test. e. scored right or wrong), then the average score can be multiplied by 100 to produce the percent correct score.

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