ICT 1.0 / 5 based on 1 rating ? ICTData and InformationGCSEWJEC Created by: beckkCreated on: 30-03-15 14:45 what does GIGO mean? garbage in garbage out 1 of 27 what is DATA? raw facts and figures e.g. survey facts 2 of 27 what does processing mean? processing means performing calculations or arranging data into a meaningful order. 3 of 27 what does transaction mean? a piece of business e.g. an order or purchase 4 of 27 what is information? data that has been processes by the computer. 5 of 27 what does knowledge mean? knowledge is obtained from information by applying rules to it. 6 of 27 why is data coded? 1. coded data is quicker to type. 2. easier to check 3. quicker to send data over a network 7 of 27 when is data not fit for purpose? when there's too few items of data or the data collected is not correct 8 of 27 when is data innacurate? when there is some data missing or there are mistakes 9 of 27 when is data bias? when a certain answer has been prompted 10 of 27 give 4 of the advantages of using ICT to store data? less storage space is needed, easily transferred, easily copied and fast access 11 of 27 give 4 of the disadvantages of using ICT to store data? personal data can be stolen, training is needed, reliance on networks, copying owners loose money when data is copied 12 of 27 What are the problems when processing inaccurate data? incorrect decisions mean loss of money, takes a lot of time to sort out mistakes 13 of 27 what is validation? data validation is a check performed by a computer program during entry of data. it ensures that data is suitable 14 of 27 what are the 5 tyoes of validation checks? format checks, type checks, range check, presence check, check digits 15 of 27 what is a format check? format checks are performed on codes to make sure they have the right combinations of characters 16 of 27 what is a type check? a type check checks that the data being entered is the same type as the data type specification 17 of 27 what is a check digits? check digits are digits that are added to important numbers such as account numbers, it is used to check numbers have been entered correctly. 18 of 27 what is a presence check? presence check checks that data has been entered into a field. 19 of 27 what is a range check? range checks are performed on numbers. they check that the numbers are entered within a certain range. 20 of 27 how can errors in data occur? transcription and transmission 21 of 27 what is transcription? using the wrong form, keyboard errors and mistakes in formulas. 22 of 27 what is transmission? when data is corrupted as it travels through wires 23 of 27 what is verification? data verification means checking that data being entered matches the source of dat 24 of 27 whata re the other methods of validation? hash totals and batch totals 25 of 27 what is a hash total? meaning less totals used for a check 26 of 27 what is a batch total? totals that have a meaning and are used for a check 27 of 27
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