Turning Technologies TurningPoint Cloud - Manual (Page 144)

TurningPoint Cloud 144
Saving and Printing a PDF Report
TurningPoint Cloud allows the user to print a hard copy of the reports. The reports are printed as PDF files.
1 While in the Reports window, click the Print icon and select Print.
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Click Print and select Preview to view the report before printing or to save the report as a PDF.
2 Make any necessary adjustments in the Print window.
3 Click Print.
Results by Question
The default Results by Question report displays the following elements:
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Question text
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Question type
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Answer choices
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Responses (percentage and count)
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Chart
Checking the boxes in the right panel adjusts the details of the
report. Selections will be remembered for future use.
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Question Statistics- Adds a table to the report under each
question that displays the Mean, Median, Variance and
Standard Deviation for each question.
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Difficulty and Discrimination Index- Displays the difficulty/discrimination index on a per question basis.
Difficulty and Discrimination Index Formulas
The Difficulty Index 1 is a measure of how difficult the question was to correctly answer. It shows the percentage of
participants that answered the question correctly based on the entire group of active participants.
The Difficulty Index is calculated using the following formula: D = c / n
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D = Difficulty Index
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c = Number of participants that answered the question correctly
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n = Total number of active participants
The Discrimination Index 2 for a particular question is based on the point biserial correlation coefficient, which measures
the correlation between the correct answer on a question and the total test scores of the active participants.
To calculate this statistic, you must first determine the following:
1
Kenneth D. Hopkins, Educational and Psychological Measurement and Evaluation, 8th ed. (Needham Heights, MA: Allyn and
Bacon, 1998), 256 - 260.
2
Hopkins, 256 - 260.
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