No.3 What is Data Operations (3): Mindset
This one today can be described as a summary of ways of thinking, a total of fourteen of the more important ways of thinking for me personally, to share with you. Please don't mind my soul painting.
1.Signal and Noise (Reliability and Validity)
The English word for credibility is Reliability, which simply means trustworthiness. When looking at the data sometimes there will be points that are very different from the daily data. Validity, in English, stands for the degree to which a measurement instrument or tool can accurately measure the thing to be measured. This concept represents the degree of accuracy of the data, the more accurate the more reliable. But in practice a single-minded pursuit of validity may lead to higher costs and lower efficiency. Reliability analysis allows isolation of noise in the signal, and validity analysis improves the accuracy of the signal. This is the most important premise of data analysis.