Chapter 7: Data Gathering
Determination of the data requires a good amount of sample for the perfect analysis. Saturation sampling requires an access to the complete population. However, at most times this type of sampling is the most toughest part and its better to have a probability sampling containing. Thus it is very important for a good data gathering to include samples with a large domain. This widely helps in the triangulation considering the common points from the huge set of data. The pilot study is a sample study which gives an analysis of what could be expected out of the results.
There are different data recording techniques. Even though the notes comply to a good amount of data but there is always a tendency to miss out on the data. Thus, an audio or video recording would provide a definite approach to examining the data. Further on, interview conduct is an approach which could be directed towards the target group and the questionnaires designed in a way that it accomplishes the desired objective. A semi-structured interview is best handy as the planned interviews doesn't always go as expected and an unplanned one could be quite blunt in its approach. The responses in terms of ratings and differential scales are easier to interpret, however it also causes an inconvenience to understand the participant's state of mind.
Chapter 8: Data Analysis
The data analysis needs to collate the data qualitatively as well as quantitatively. The categorizing of the data is quite challenging considering the segregation of the categories distinctly and ensuring that there is no overlap. Critical incidents might occur where the participants are given a unique consequence and the results might not signify the actual outcome but a hypothetical one. There are multiple tools available for categorization, theme based analysis and quantitative analysis.Chapter 10, Identifying needs, Establishing requirements
The activities of data gathering, analysis, interpretation, and presentation follows a pattern which is to first gather some data, analyze and interpret it, and then extract relevant requirements from it. Knowing and framing the requirements is must to keep every member of the team on the same page. The customer must be delivered with what he exactly wants. Thus, the functional and non-functional requirements are what are expected to be met which says what a system must do and the constraints with its development respectively. Brainstorming is what brings the design into the picture.
Question: Who decides if a product/design is good?
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