ICT- Data, Information, Knowledge & Processing 0.0 / 5 ? ICTData and InformationASAQA Created by: TOPHAMSCreated on: 24-02-17 15:56 What is the formula for information? Information = Data + Context + Meaning + Structure 1 of 22 What is meant by Data? Data is raw facts and figures any alphanumeric character values that on their own have no meaning 2 of 22 What is meant by information? is processed data and is based on raw facts and figures 3 of 22 What is meant by Knowledge? Is the result of interpreting information 4 of 22 What is the data type Boolean? Can be one of two values e.g T/F 5 of 22 What is the data type Integer? Holds whole numbers only 6 of 22 What is the data type Real? Holds decimal numbers 7 of 22 What is the data type Text/String? Any character/number/symbol 8 of 22 What are the factors affecting the quality of information? Accuracy, Relevance, Age, Completeness, Presentation, Level of Detail 9 of 22 What is meant by verification? Ensuring the source data is the same as the object data 10 of 22 What is the computer verification method? You enter the data in twice and the computer checks the entries 11 of 22 What is the manual verification method? You enter the data in and check manually from the screen against the source 12 of 22 What is the Lookup verification method? Having part of the data and retrieving the rest/checking the rest by looking up the data on a list 13 of 22 What is meant by validation? Making sure that the data value entered is sensible and reasonable 14 of 22 What are all of the validation methods? Presence check, Length check, Range check, Format/picture check, Check digit, Lookup check 15 of 22 What are the different ways of representing information? Text, Graphics, Sound, Video, Animation, LED 16 of 22 What are the pros and cons of Static sources of information? Limited source, no risk of virus, not necessarily up to date 17 of 22 What are the pros and cons of Dynamic sources of information? Returns wide range of results, not always accurate, virus danger 18 of 22 What is meant by coding data? This is changing the original data into a shortened version in order to store it in the computer 19 of 22 What are the benefits of coding data? Less storage space required. E.g. Mon, Tue, Wed - A limited number of codes exists aiding in validation of input 20 of 22 What are the drawbacks of coding data? Precision/quality of data can be lost - The user needs to know the codes utilised 21 of 22 What are the costs of producing information? Hardware, Software, Workers, Consumables, Training 22 of 22
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