Check your understanding on data information and knowledge
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is Data? | are raw facts and figures. On its own it has no meaning. It may be inputted and stored in a computer.
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| What is Information? | Information is processed data. Information has a context which makes it meaningful. Computers output information.
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| What is Knowledge? | Knowledge is derived from information by applying rules to it i.e. it is what you get when you interpret information.
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| What is Encoding Data? | Encoding means to replace data with short codes
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| Give an example of Encoding Data? | Male/Female encoded as M/F.<br>
Blue/Red encoded as B/R
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| Give 5 advantages of Encoding Data? | Less storage space is required - saves memory<br>
Faster manual input <br>
Less chance of transcription errors<br>
Greater consistency of data<br>
Comparisons are shorter thus speeding up searches
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| Give 2 disadvantages of Encoding Data? | The precision of the data may be coarsened through value judgments.<br>
The user needs a list of valid codes and their meanings to understand the encoding
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| What is a Value Judgement? | A value judgement is a matter of opinion rather than fact.
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| Give an example of a Value Judgement | Example: the following data may be collected on a dating agency form - I am: handsome / good looking / average / ugly.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Alton College AS ICT
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