Download e-book for kindle: Applied Measurement with jMetrik by J. Patrick Meyer

By J. Patrick Meyer

ISBN-10: 0415531950

ISBN-13: 9780415531955

jMetrik is a working laptop or computer application for imposing classical and glossy psychometric equipment. it's designed to facilitate paintings in a construction surroundings and to make complicated psychometric methods obtainable to each size practitioner. Applied dimension with jMetrik reviews psychometric concept and describes how you can use jMetrik to behavior a finished psychometric research. each one bankruptcy makes a speciality of a subject matter in dimension, describes the stairs for utilizing jMetrik, and offers a number of examples of accomplishing an research at the subject. thoughts and information for perform is supplied through the book.

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Example text

Group 1 will contain the lowest 10% of scores, group 2 will contain the next lowest 10% of scores, and so on. Similarly, the Quartiles option is the same thing as specifying four groups for the Ntiles option. The Score Type drop-down menu includes an option for Percentile Ranks. However, this computation of percentile ranks is different from the one in the Test Scaling dialog. The two calculations will be similar but not exactly the same. You can choose from Tukey, Blom, and van der Waerden normal scores in this menu.

To rename a variable, click the Variables tab, and then double click on a variable name to display the Rename Variable dialog. Type a new name for the variable, and press the OK button to rename the variable. jMetrik will modify your new name if necessary to make it comply with the naming conventions described earlier. If you attempt to use a name that already exists in the table, the variable will not be renamed, and jMetrik will produce an error message. You can also use the subset variables process to create a copy of a table.

For example, to copy exam1, select the exam1 table in the list. Type “exam1_copy” (without quotes) in the New Table Name text field, and press the OK button. You will now have a copy of exam1. A benefit of using this method to copy a table is that all of the item scoring information is copied to the new table too. Notes 1 This option is not recommend because the white space functions differently for text variables than it does for numeric variables. A white space is treated as a legitimate text value, but not a legitimate numeric value.

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Applied Measurement with jMetrik by J. Patrick Meyer

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