Post-test Analysis

After the testing was completed, it was necessary to analyse the information gathered and to draw conclusions from it. Landay  suggests to:

• summarise the data gathered for statistical measures such as error rates.

• make a list of all the ``critical incidents.'' These are all the major points that occurred, both positive and negative.

Analysis of the above will indicate if the user interface really did work as expected. This analysis may result in the creation of a list of modifications and improvements that should be made to the system.

After the user testing was complete, the video recordings of the computer's screen were reviewed, information on the error rates and the time it took them to enter each formula recorded. All responses to the anonymous and verbal questionnaires were then collated.

The above results were then analysed. The conclusions are presented and discussed in Chapter .