Merge whchang's typo fix to HEAD.

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tjhunt
2009-01-20 03:58:35 +00:00
parent d61f7b7641
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@@ -19,7 +19,7 @@ this parameter coincides with the percentage of users that answer the question c
<h2>Standard Deviation (SD)</h2>
<p>This parameter measures the spread of answers in the response population. If all users
answers the same, then SD=0. SD is calculated as the statistical stadard deviation for the
answers the same, then SD=0. SD is calculated as the statistical standard deviation for the
sample of fractional scores (achieved/maximum) at each particular question.</p>
<h2>Discrimination Index (DI)</h2>