Information Technology Test
Chapter 1 – From Data to Information!
Test your knowledge.
1) What are the four main purposes of information?
The purpose of information is to inform, persuade, entertain and educate.
Persuade: to make them believe what you’re saying.
Entertain: to keep someone amused/ to keep ones attention.
Educate: to be able to give someone information about a new topic.
Inform: to tell people the facts.
2) What is a data type?
A data type is a set of data with predefined characteristics.
3) What are four commonly used data types?
The four common used data types: interger data floating point numbers character data types
String data types.
4)
5) What can occur if information is produced from incorrect or incomplete data?
Information produced from incorrect or irrelevant data is considered an unreliable source on which to base a decision.
Incomplete: means that it is there but not finished.
Incorrect data: means that it is there but incorrect.
6) Why is it important to select relevant data?
It is important to select relevant data, because it is important to insure the highest quality of information before being input.
Relevant data: data that you need.
7) What two aspects need to be considered to select relevant data?
The suitability and the reliability.
Accurate and useable.
8) What are the properties of usable data?
To be usable data the properties which it needs is suitability, reliability, accuracy, timeliness and freedom from bias.
Suitability: relevant to the data.
Reliability: trusted source. E.g. newspaper
Accuracy: error free information
Timeliness: accurate for the time, that it is needed.
Freedom form bias: free from other peoples opinion.
9) How can entering an incorrect data type into a spreadsheet cause an error?
10) Why is it important to check the reliability of data?
It is important to check because reliabilty of data because incorrect data may cause inappropriate decisions to be made.
To make sure it is more accurate e.g.
Test your knowledge.
1) What are the four main purposes of information?
The purpose of information is to inform, persuade, entertain and educate.
Persuade: to make them believe what you’re saying.
Entertain: to keep someone amused/ to keep ones attention.
Educate: to be able to give someone information about a new topic.
Inform: to tell people the facts.
2) What is a data type?
A data type is a set of data with predefined characteristics.
3) What are four commonly used data types?
The four common used data types: interger data floating point numbers character data types
String data types.
4)
5) What can occur if information is produced from incorrect or incomplete data?
Information produced from incorrect or irrelevant data is considered an unreliable source on which to base a decision.
Incomplete: means that it is there but not finished.
Incorrect data: means that it is there but incorrect.
6) Why is it important to select relevant data?
It is important to select relevant data, because it is important to insure the highest quality of information before being input.
Relevant data: data that you need.
7) What two aspects need to be considered to select relevant data?
The suitability and the reliability.
Accurate and useable.
8) What are the properties of usable data?
To be usable data the properties which it needs is suitability, reliability, accuracy, timeliness and freedom from bias.
Suitability: relevant to the data.
Reliability: trusted source. E.g. newspaper
Accuracy: error free information
Timeliness: accurate for the time, that it is needed.
Freedom form bias: free from other peoples opinion.
9) How can entering an incorrect data type into a spreadsheet cause an error?
10) Why is it important to check the reliability of data?
It is important to check because reliabilty of data because incorrect data may cause inappropriate decisions to be made.
To make sure it is more accurate e.g.