Data Errors

Question 1

Define transcription and give an example

Answer 1

This occurs when the user is copying from one source to another eg a data analysis entering the answer on a written questionnaire into a computer

Question 2

Define input and give an example

Answer 2

When automating the input of data an incorrect value may be input eg if a bar code is damaged then it will be incorrectly read by the scanner at a supermarket. An audible beep sound to say that it has been correctly entered

Question 3

Define processing and give an example

Answer 3

A programming error could cause a value to be miscalculated eg if the car rate had been incorrectly entered into a computer program then the amount of vat to pay will be incorrectly calculated

Question 4

Define transmission and give an example

Answer 4

When data is transmitted around the word via electronic signals it is important that the data does not get corrupted so parity checks are used

Question 5

What are the 4 ways that data errors can occur

Answer 5

Transcription
Input
Processing
Transition