Each of these has one common thread, focus. However the focus may not mean the same things in each case. Validity is the truth, the supportable truth of the information and choices. Reliability is trust in all the information. With this in mind, we can decipher what each one means.
In business research questions, validity and reliability are tied to the understanding of the problem. The simple example is, "sales have fallen off" as a problem. ...
The expert explains potential challenges to validity and reliability of business research questions, data and analysis.