Which of the following is not classed as a source of data?
Original source data
Indirect data
Image data
Archived data
This is where you have made efforts to obtain the data directly.
Processed data
An advantage of original source data is that you get the exact data which you need
A disadvantage of original source data is that you have to gather more data than you actually need
Gathering original source data is always faster than any other method
You may be able to sell original source data to other people/companies and recoup some costs
This means that data has been collected for a particular reason but then used for something else.
Direct data
This is data which has been copied and then removed from the system and stored safely offline
Using indirect data might be less expensive than using original source data
Examples of static data are:
Data from a stock market
A newspaper story
Data on a webpage that is updated from time to time
Data stored on a CD ROM
Column headings for a football league table
News feeds a mobile phone app.
Archived data are data that you collected and used for a particular reason. However, you then found another way that you could make use of that data. The data is used for a purpose different to the original intention.
Indirect sources of data are data that was collected by someone else and that you are now using for another reason.
Archived data is immediately available online.
All indirect data is purchased from someone else.
Accuracy, relevance, age, level of detail and completeness of the information can not affect its quality.
Data:
Data represents organized and processed facts.
Usually data is static in nature.
It can represent a set of discrete facts about events.
Data is not a prerequisite to information.
By information we mean human understanding of a subject matter that has been acquired through proper study and experience.
Encoding transforms data into another format in such a way that only specific individual(s) can reverse the transformation.
Encryption transforms data into another format in such a way that only specific individual(s) can reverse the transformation.
Once a static information source has been created, it is unlikely to be changed or updated for a significant amount of time.
What are a collection of words, numbers or pictures with meaning known as?
Data
Information
Communication
Knowledge
What does putting data into a framework or structure provide?
More information
Rules
Context
Which of the following is correct?
Knowledge leads to information, and information leads to data
Data leads to information, and information leads to knowledge
Data leads to knowledge and knowledge leads to information
Which of the following is not an example of data?
301062
Yellow
5675, Rafael Nuñez
The petrol gauge was showing almost empty. I decided to look out for the next petrol station'. What is the statement 'I decided to look out for the next petrol station' an example of?
None of the above
What is an automatic computer check to make sure data entered is sensible and reasonable known as?
Double entry
Verification
Validation
A faulty what can cause data to become corrupt?
Scanner
Hard disk
Printer
Which of the following is unlikely to damage or delete data?
System crash
Archiving
Virus
Which would be the best method of backing up your data?
Printing out paper copies and filing them away
Keep a second copy of the data on your hard disk
Make a copy on a removable storage device, e.g. CD, DVD, external hard disk
Where backups ideally should be kept?
On the computer's hard disk
Near the computer
In a separate room or off site
What can be done to disks to prevent accidental deletion of data?
Sore them in their original packaging
Write protect them
Only allow access with a user id and password
In order to restrict access to secure data, a system of what should be used?
Passwords
Anti-virus software
Multi-user operating system
Converting data into a secret code so that it cannot be read by an unauthorised person is called what?
Inscription
Encryption
De-encryption
Which of the following is not a physical precaution to protect data?
Locks on the doors
Security guards
What keeps a record of every file opened and every keystroke made?
Audit log
Utility program
Security policy
Which of these is a primary source of data?
Articles, such as literature reviews, commentaries, research articles in all subject disciplines.
Statistics, surveys, opinion polls, scientific data, transcripts.
Criticism of works of literature, art and music.
Encyclopedias, dictionaries, handbooks.
Cartoons, postcards, posters.
Autobiographies, memoirs, diaries, emails, oral histories.
All of these are primary sources.
Neither of these is a primary source.
What validation type would make sure a post code was entered in the correct format?
Length check.
Format check.
Presence check.
What validation type would you use to check that numbers fell within a certain range?
Range check.
Check digit.
What validation type checks that a field is not left blank?
Format check
Length check
Presence check
What validation type uses the last one or two digits to check the other digits are correct?
Check digit
What validation type checks a minimum number of characters have been entered?
Range check
Data is to be entered into a computer in the format YYMMDD. Which of the following is not a valid date?
310921
211113
28th June 2017
Which of the following statements is false?
Validation can check that the data is sensible.
Validation can check that the data falls between certain allowable boundaries.
Validation can check that the data is correct.
Which of the following is NOT a method of verification?
Double entry - typing the data in twice and getting the computer to check the second version against the first.
Using presence, range and length checks to make sure that no mistakes happen.
Printing out what you have typed in and comparing it against the source data.
Which method of validation would be ideal for a shop to use when entering information into a stock database?
Lookup
People traveling by air can make use of dynamic information sources at airports. They can see a real-time list of all flights which are due to arrive and depart.
Direct data: You may not know exactly where the data came from and so it may be unreliable.
Indirect sources means data has been collected for a particular reason but then that data is used for something else.
The terms "Verification" and "Validation" are used in the same way, they are synonyms
The statement 'it wasn´t raining outside' is which of these?
