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Analysis
When conducting usability tests there are a number of aspects too keep
in mind. Be totally prepared for the tests, have everything you need. Be
polite and courtious and make sure the subject is comfortable. Ensure that
consent from participating parties is/has been completed and explain too
them what they will be undertaking. Get them doing the test at there own pace
and let them ask any questions. When completed thank them for participating
and ask them if they have any other comments that were not covered in the
test.
Analysis Terms
 pvalue  The probability value  used in statistical calculations.
Relates too the chance that something succeded through chance
 onetailed test  Used if you have predicted the swing and the direction
 twotailed test  Used if you have predicted the swing but not the direction
 standard deviation  the variability from the mean. The larger the deviation
the the larger the difference between predicted values and actual values.
 ttest  Statistical test that compares means
 Independent samples  Where data collection is from a large pool of
different aptitude users.
 Correlated samples  Provide users with 2 different tests and find out
which one was harder.
 Single sample test  One group is tested against one expert result

