Knowledge Information And Data

Question 0

Define information

Answer 0

Information is data which has been processed by the computer or given a context

Question 1

Definition of data

Answer 1

Data consists of raw facts and figures or records of transactions

Question 2

Define knowledge

Answer 2

Knowledge is derived from information by applying rules to it

Question 3

Example of knowledge information and data - race

Answer 3

14.9, 21.3, 17.8, 12.4, 13.7, 11.5, 19.2 - data
These are times in seconds from a 100m race -information
The lowest number is the fastest time therefore the person with the lowest number is the winner - knowledge

Question 4

Advantages of encoding data

Answer 4

Saves time typing it in eg LHR is faster than typing London Heathrow in a baggage system
Reduces the amount of hard disk space/less memory used
Lessens the chance of errors due to less typing/easier to validate/greater consistency
Faster to search due to the greater consistency of data

Question 5

Encoding data can lead to inaccurate results - how

Answer 5

Coarsens the data and causes a loss of precision e.g. Hair colour in a survey as all the categories cannot be listed such as light mousey dark brown so all listed under brown
Subjective to personal opinions e.g. one person may rate a meal as excellent but someone else may only rate it as good

Question 6

Difference between encoding and encryption

Answer 6

Encoding is giving something s shortened code for the purpose of data entry such as GB for Great Britain and encryption is scrambling things like credit card details so they can’t be read