220.127.116.11 describe data collection methods
Research methodology is the specific procedures or techniques used to identify, select, process, and analyze information about a topic.
A problem is a situation that is unsatisfactory and causes difficulties for people.
Description of the current system is an explanation of the functionality, algorithms of its work, objects that interact with it.
Identifying user needs are aspects of the current system that require improvements or new features.
Research methods. Data collection methods
It’s used to obtain information from person through oral responses.
Questionnaire is an instrument for collecting data, which almost always involves asking a given subject to respond to a set of oral or written questions.
Questionnaires enable the same set of questions to be asked to many people. A carefully designed questionnaire can be a very quick and cheap way to obtain specific answers to specific questions from a large number of people.
Observation of the current practice enables current methods of working to be examined and necessary exceptions to the normal pattern of working to be noted. It is both a physical and a mental activity. Observation is purposive and not casual.
Examination of documentation
Examination of the existing paperwork, documentation, records and procedure manuals can be used to identify the data that is used in the current system, the information that is produced by the current system and the procedures that are carried out.
Physical Evidence allows you to get information about past events, the observation of which is no longer possible. It can be articles, reports, user guides
Data analysis techniques
Analyzing Quantitative Data
Quantitative data is defined as the value of data in the form of counts or numbers where each data-set has an unique numerical value associated with it.
Examples: Height, Weight, Time, Price, Temperature, etc.;
Analyzing Qualitative Data
Associated with details;
Ex. 1 (Author: Ermekova Ainagul - CS teacher of NIS Pavlodar)
Ex. 2 (Author: Litvinova Olga - CS teacher of NIS Pavlodar)
Ex. 3 (Author: Litvinova Olga - CS teacher of NIS Pavlodar)
Ex. 3 (Author: Ermekova Ainagul - CS teacher of NIS Pavlodar)
Q: A system analyst is appointed to investigate the newsagent's business. Desribe three ways that a system analyst could find out the necessary facts in order to plan a computer system. For each way, describe the benefits of that method. (Marks: 6)
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