Turning Technologies TurningPoint 5 - Manual (Page 153)

TurningPoint 5 for PC 153
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Standard Deviation
standard deviation (σ) = √(∑((x - μ)²) / n)
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x = a Participant’s score
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μ = mean total score
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n = total number of Participants
The discrimination index can then be computed with the following formula:
discrimination index = ((Mp-Mq) / σ) * √((Np*Nq)/((Np+Nq) * (Np+Nq-1))
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Mp = mean total score of the group of Participants that answered the question correctly
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Mq = mean total score of the group of Participants that answered the question incorrectly
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Np = total number of Participants that answered the question correctly
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Nq = total number of Participants that answered the question incorrectly
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σ = standard deviation of scores for the entire set
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Screenshots - Displays the screenshot with each question.
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Include Screenshots must be checked in the Anywhere preferences.
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Overall Standards - Displays the percentage of overall comprehension for each standard.
Results by Participant
The default Results by Participant report displays the following elements:
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Participant information
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Printing this report will generate a
page break in between each
participant
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Question text
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Participant response
Checking the boxes in the right panel
adjusts the details of the report.
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Correct Answers - Displays the
correct answers for each
question.
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Answer Choices - Displays all of
the answer choices for each
question.
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Response History - Displays
each response sent by the
participant for each question including invalid responses.
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Response Times - Displays the length of time (in seconds) that it took with the final recorded response(s). Response
times will not display on merged sessions.
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Overall Standards - Displays the percentage of overall comprehension for each standard.
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