How to analyze the decline of core indicators? ? ? This question is currently the most frequently asked question in data analysis interviews, because it is not only a way to examine candidates' analytical thinking, but also a frequently encountered problem in actual work. The interview or the future job is very important.
This article makes a systematic and comprehensive analysis from different dimensions such as internal, external, horizontal and vertical, and hopes to give you some reference and inspiration.
In fact, small partners who have experience in mobile number list data analysis interviews should be familiar with this question. This is basically one of the most frequently asked questions about data analysis thinking in interviews. Why do they like to ask this question, because in daily work, This problem is indeed very common, so today we will talk about it in detail: a certain core indicator has dropped, how should we analyze it step by step?
The Internet industry usually regards DAU as a core indicator. Here we will talk about a 20% drop in DAU. In fact, a 20% drop in DAU is already very serious. Although it may not be so common in actual business, for the sake of illustration, Let's exaggerate a bit.
So the first step in analyzing this kind of problem is that we need to verify the authenticity of the data. Because as I just said, in real work, if the DAU dropped by 20%, it would be a very serious accident.
Therefore, before conducting in-depth analysis, we must verify the authenticity of the data. Important things are not said three times, but we must remember them, otherwise a lot of energy and time will be wasted.