the craap test
currencry: when was the info published, is it current and relevant?
relevance: does the ino relate to your topic and who is the intended audience
authority: who is the author, do they have any credentials? are they qualified to write about the topic?
accuracy: where does the info come from, is it supported, has it been reviewed and is the language free from bias?
purpose: what is the purpose of the info? is there political religious, personal etc bias?
Validity
Refers to the degree to which a study accurately measures what it’s intended to measure.
Reliability
the consistency of results when an experiment is repeated under the same conditions.
Accuracy
the closeness of a measured or observed value to the true value.