What is measurable data?

Could you please elaborate on the concept of measurable data? In the realm of cryptocurrency and finance, how does it play a role in our understanding of market trends, risk assessment, and investment strategies? Is it simply numerical information that can be quantified and analyzed, or does it encompass a broader spectrum of information that can be used to make informed decisions? Furthermore, how do we ensure the accuracy and reliability of this data, especially in an industry as dynamic and volatile as cryptocurrency?