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Adv:
- It is efficient and effective way of gathering data
- It is very accessible and reliable source of data
- It is relatively cost-effective and rapid where data is readily available

Disadv:
- It may not be complete
- Too much documents can cause information overload

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Advantage:
It is more practical than interviewing each person separately.
Disadvantage:
Cannot get a deeper understanding as the analyst cannot ask follow up questions to the person taking the questionnaire.

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Advantages- Higher Participation
-It can handle the complex subjects
-The gaps in the areas of misunderstandings and minimizes future problems
-It is the best source of gathering qualitative information

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Advantages

The analyst can see what the system does well and not so well.

Not expensive to carry out as the employees can keep carrying out their work while they are being observed

Disadvantages

The employee being observed might feel uncomfortable and work in a different way to usual

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interviews

Interviews involve a direct conversation between the analyst and the client. Where there is a single end user or small group of end users then interviews are the perfect solution, because questions can be asked of the users and a conversation can take place which can expand upon answers that are given with follow-up

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Disadvantage- people cant stay anonymous so they might feel uneasy during an interview.

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Advantage: Questionnaires can be used to gather responses on a more larger scale with standardized set of questions that makes the analysis easier and faster.
Disadvantage: The framing and language used in the questionnaire might not be clear which can lead to incorrect understanding of the questions resulting in inaccurate analysis.

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advantage- Large sample size for the results to be quantified and compared
disadvantage- the questions are multiple choice questions which doesn't allow the analyst to ask the user elaborate questions

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Questionnaires

Used when information is required from a large number of users. This also means there is a large sample size.

It can be use as an alternative for questioning users who cannot appear for an interview.

The questions must be asked in a way that responses are not biased and can be analysed.

Interviews

Involves direct conversations between analysts and clients.

It is most suitable for small number of users, as detailed in-depth responses can be collected.

However, they are time consuming.

Observation

Analyst watches the processes that take place in the organization to see how every task is completed.

The information collected is usually used to develop the requirements specification.

However, it is possible that users act or work differently from normal, which may lead to inaccurate data collection.

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Interviews are a direct conversation between the analyst and the client. Used when there is a single end user or small group of end users since questions can be asked and answers are expanded upon with follow-up questions for further detail.

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It is appropriate for a large number of end users or individuals that cannot be interviewed. It is used in analysis as the closed ended questions are east to collate/generalize. However it is likely that questions may be misinterpreted and therefore give inaccurate/unreliable questions

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Discuss the appropriateness of each method  

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Discuss the appropriateness of each method  

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Describe one method of Analysis Listing its advantages and disadvantages - Inspection of Documents

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Describe one method of Analysis Listing its advantages and disadvantages - Inspection of Documents

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Describe one method of Analysis Listing its advantages and disadvantages - Observation

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Describe one method of Analysis Listing its advantages and disadvantages - Observation

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Describe one method of Analysis Listing its advantages and disadvantages - Questionnaire

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Describe one method of Analysis Listing its advantages and disadvantages - Questionnaire

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Describe one method of Analysis Listing its advantages and disadvantages - Interview

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Describe one method of Analysis Listing its advantages and disadvantages - Interview

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15.1 & 15.2 - Analysis and design

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Methods of Analysis

Design

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15.03 Development and Testing

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15.04 - Implementation

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15.05 - Documentation

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15:06 Evaluation and Maintenance