Question 6

What does “validation/validity” mean?
What does “significance” mean?
What does “reliability” mean?
What does “relevance/relevant” mean?


Validation is the process of checking if something satisfies a certain criterion. Examples would include checking if a statement is true (validity) , In engineering or as part of a quality management system, validation confirms that the needs of an external customer or user of a product, service, or system are met. validation is ensuring "you built the right product"

Significiance is the the meaning and importance of something.

Reliability is the ability of a person or system to perform and maintain its functions in routine circumstances, as well as hostile or unexpected circumstances.

Relevance is the ability (as of an information retrieval system) to retrieve material that satisfies the needs of the user.

References:
http://en.wikipedia.org/wiki/validation
http://en.wikipedia.org/wiki/Reliability
http://en.wikipedia.org/wiki/Significance
http://www.merriam-webster.com/dictionary/relevance