Information Systems Analysis

Please answer all 3 questions with 200 words or more with references. Thank you

1.  All six methods (see below) of information gathering discussed in this week lecture take a lot of time. Do you think that there are some ways that systems analysts could collect the required information while saving time? Please offer your opinion on this issue

Interactive Methods (1. Interviewing, 2. Joint application design, and 3. Questionnaires)
Unobtrusive Methods (4. Sampling, 5. Document analysis, and 6.Observation)

2.  During the systems development life cycle (SDLC), certain key problems discovered in the later stages could be directly traced back to inadequate and/or poor efforts in the requirements phase and industry studies show that over 50% of systems problems belong to this case. In addition, as mentioned in this week lecture notes “the cost of errors in requirements that weren’t discovered until later” may go up to 1,000 times. As a systems analyst, what should we do to minimize this problem? How might this be avoided?

3.  For information-gathering techniques, there are interactive methods (interviewing, joint application design, and questionnaires) and unobtrusive methods (sampling, document analysis, and observation). As we all know that unobtrusive methods are less disruptive than interactive methods; however, when they are being used alone, they would gather insufficient information. Therefore, it is recommended that systems analysts should combine both interactive and unobtrusive methods during information gathering process. Please offer your opinion on this issue