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System Life Cycle (questionnaire (Disadvantages (Unanswered questions,…
System Life Cycle
questionnaire
Disadvantages
Unanswered questions
Dishonest answers.
Differences in understanding and interpretation
Advantages
they are relatively easy to analyse.
a large sample of the given population can be contacted at relatively low cost;
Documentary
Advantages
Cheap
Stability
Disadvantages
Time consuming
Biased selectivity
interview
disadvantages
Lack of attention
Time consuming
expensive
Advantages
can change the question
Improve relevant knowledge
observation
Disadvantages
people are uncomfortable
Might take a lot of time to gather data
Advantages
Overall view of the system
reliable data
inexpensive
Design