Data

Question 1

Data

Answer 1

Raw facts and figures

Question 2

Information

Answer 2

Processed data with meaning and context

Question 3

Knowledge

Answer 3

Derived from information by adding rules to it.

Question 4

Problems with coding data

Answer 4

Coarsening of data
Coding value judgements
Obsure meaning

Question 5

Advanatges of coding data

Answer 5

Faster input
More data can appear on screen
Less storage space needed
Validation checks can be used
Less effect to type in

Question 6

Cost of collecting data

Answer 6

Time
Human Resources
Financial

Question 7

Stages of data collection

Answer 7

Data collection
Data entry
Data processing and maintenance

Question 8

Characteristics of Good Quality information

Answer 8

Accuracy
Relevance
Up-to-date
Completeness
Presenatiotion
Level of detail

Question 9

Validation

Answer 9

A computerised check that the data input is sensible and reseasonable

Question 10

Validation check

Answer 10

Range check: data value must lie within certain limits. e.g. shoe size

Length check: a text value must contain a certain number of characters. e.g. postcode

Presence check: the data value must be present. e.g. password

Question 11

Verification

Answer 11

Checks that the data typed matches the source document.

Question 12

Verification techniques

Answer 12

Proof reading

Double entry