Sample Simon says

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The Computers in Education Survey

The CEQ survey is featured under the Introduction section. A click here will remind you what the CEQ was about.

We have a sample of CEQ results ready for you to peruse. It contains completed survey results for twelve high school principals, and snippets from corresponding Lertap output. And, at the very end of the last page in this sample, there's even a link to an Excel file with data already entered. (Word doc file, about 115 KB.)

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The Chemistry Quiz

Surely you have not forgotten the Class quiz example given in the Introduction section? Click here for a reminder.

A sample of fifteen answer sheets is ready for you to marvel at; this is another sample which comes complete with corresponding Lertap snippets, and a link to data already entered in an Excel worksheet. (Word doc file, about 115 KB.)

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The Lertap Quiz (November 2006 version)

No doubt your grandparents have mentioned the world-renowned Lertap Quiz data set -- it's been with us since 1973. The original version of the data set is described in the appendix to the manual. Here we give you the chance to download a modified version, one whose second column contains a school type code. This modified version has been created in order to provide more challenges to beginning users; the presence of a school type code can lead to the use of, for example, the 'Breakout scores by groups' option on the Run menu (download the Excel xls file, about 55 KB).

There is also a brief codebook which goes with the Excel workbook. It may downloaded by clicking here (Word document, about 58 KB).

We've also created some tasks to help ward off brain addle. Try your hand, for example, at our Research Questions Set A (Word doc, about 60 KB).

Those tasks were too easy, you say? Fair enough, mate, avagowiththese: Research Questions Set B (Word doc, about 80 KB).

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The La Florida Data Set

Here's a sample data set from a large Latin American Faculty of Engineering. It concerns the item responses of more than 10,000 first-year applicants to two tests, one on mathematics, the other on physics ("fisica"). Both of these tests were intentionally designed to be difficult; they were basically used as screening devices.

Although the tests have low reliability, as indexed by coefficient alpha, in the area of the cut-score, the pass-fail score, there's evidence to suggest that they may have functioned well enough. (Look at the bottom of the respective Statsul reports, and also at the plot of conditional standard errors of measurement.)

This sample data set is an Excel workbook which has been zipped; it's about 1.5 MB in size.

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The Ed 501 Data Set

Here we've got a very practical exercise built on a real test from a university educational psychology class. Use this exercise to remind yourself (and students?) how a Lertap data set is formed when given just a worksheet of item responses, and a list of the correct answers to test items. (Has a set of research questions to answer which includes getting boxplots of results, and correcting for a mis-keyed item.)

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Cognitive Holding Power Questionnaire

This sample stems from the work of John Stevenson of Griffith University (Australia). The CHPQ is an affective instrument with thirty items. Our sample includes an Excel data set. (Web page, will open in a new browser window.)

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Concurrent validity study.

Relates results from an authentic concurrent validity study undertaken by a masters student. Has numerous samples of Lertap output, and exemplifies how to apply some of Lertap's less-used options. Demonstrates use of an external criterion score. (Web page, will open in a new browser window.)

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Parallel-forms reliability study.

Discusses the development of an academic aptitude test for high school students, based on authentic data. Gets into some practical data processing problems; shows how to use Excel's Data Filter, a powerful utility. Talks about speeded tests, and practice effects. A typical example of classical test development methods, with many snapshots of Lertap results. (Web page, will open in a new browser window.)

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Importing data.

A fairly technical discussion of downloading sample data sets from the Internet, and making them ready for Excel and Lertap. Shows use of "The Spreader". Discusses general matters related to importing data, using samples from Iowa University. (Web page, will open in a new browser window.)