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To evaluate the effectiveness of the kiosk and the icons used in the interfaces we can use several different evaluation techniques There are three types of techniques we will be looking at the first one is the Empirical method the second one is the Observational technique and the last one is the Query technique In this section there will be a short description of each technique with an example of how it could be used to evaluate the kiosk Empirical methods One of the most effective ways of evaluating a design is to use a controlled experiment This provides experimental indication to support a particular demand or assumption Different factors come into effect when analysing this method Subjects The kiosk is designed to be used by the general public and not only the computer science undergraduates So it is important the subject we choose for our experiments are representative of the user group This means that to use people from computer science only will not give a fair reflection of the effectiveness of the icons used on the kiosk But by using people with little or no knowledge of computers touch screens and icons we will be able to determine which icons are best suited For example if we were to choose three different icons which represent a home page and then ask two hundred subjects to identify which icon best describes the home page icon In our experiment we asked the subject which icon they felt best represented the home page icon The sample of these icons can be found below 1 23 Please tick the box which you think best describes the home page icon Icon 1Icon 2Icon 3 From a sample of 200 subjects the result was as following From the table it can be seen that when the experiment is repeated for a large number
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