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Seven steps, in-depth interpretation of data meaning
2022-07-28 18:18:00 【Software testing network】
“ Look at the latest sales data , What did you find ?” At work , This kind of problem with no clear goal often occurs . What I hate is : Most of the time , Daily data is just a little fluctuating . If you just take “ Chain ratio 3% growth ” Report this conclusion , Will be detained again “ I know that, too , In depth analysis !” The hat of . Then what should I do ? Today, the system will explain .
There is a standard order to interpret data , It is divided into 7 Walking : Look at the numbers 、 Looking for a regular 、 Set standards 、 Look at the structure 、 Assume clearly 、 Verify the truth 、 Draw a conclusion . We are not in a hurry , Step by step :
The first 1 Step : Look at the numbers
That's the bottom line , Year on year , Chain ratio , The absolute value , Up 、 fell …… Daily reports are all these things . But these things are unpopular . in the first place , As long as a person looks at it, he will know the situation , There is no need to write ; both , These things have no business meaning , Talking is the same as not talking , So we must go further .
The first 2 Step : Looking for a regular
Want to go further , You can prolong the data time , See if there are natural laws . There is no technical content in this step , Just connect the daily reports directly , But it works very well ! Because many conventional data fluctuate , It's periodic . Master the law , It can avoid making a fuss , False positives, false positives . You can also keenly observe the real problem ( Here's the picture ).
The first 3 Step : Set standards
I want to go deeper , You have to find the criteria . data + standard = Judge , With good or bad judgment , To continue thinking : Why / Why not . The best standard , There's one KPI The value is on the head , This is a direct comparison KPI The completion rate has a conclusion .
But some non core indicators , No, KPI requirement , At this time, we have to find other standards . For example, use scene disassembly , Compare non core indicators with KPI Relationship between indicators ,KPI Find out the value range of non core indicators when reaching the standard , This can also form a judgment standard , use sb.'s judgement .
The first 4 Step : Look at the structure
With good or bad judgment , You can think further about the reason . But before thinking about the reason , It's best to look at the internal structure of the index first , Find the big end of the impact index . So the focus is clear , It's easier to see the problem .
For example, look at the sales , Sales stress people 、 cargo 、 site , Start with the user 、 goods 、 Three dimensions of channels , Look at the internal structure alone , See which type accounts for a high proportion , Which type is performing well at present / Bad . This distinguishes the key points , Easy to form ideas .
For example, look at the cost , Differentiate between variable costs 、 fixed cost , Variable costs differentiate commodity costs 、 Marketing costs . Distinguish the front desk in the fixed cost 、 Back office costs . This makes it easier to see which is the source of fluctuations .
With this step , It will be much easier to find the reason later , You can go straight to the point .
The first 5 Step : Column assumptions
Some lazy classmates , Draw a conclusion directly in the previous step . For example, the recent poor sales are due to A The goods didn't sell well . The cost is high because the promotion costs too much …… But this reason is often too superficial . in the first place , There may be A The reason why the goods are not bought well is due to other hidden factors ( There are deeper factors ); both , There may be A The reason why the goods are not bought well is that some types of users are losing ( Other factors affect ); Third come , Even if A I didn't buy it well because A no way , That doesn't necessarily mean that it can be corrected in a short time , Still have to think of other ways ( The feasibility of problem analysis )
therefore , Further down , Be sure to make clear assumptions , Roll out the logic behind the problem . Many students will be silly at this step , I think there are a lot of reasons , How can I make a reasonable list ? Here are two simple ways :
- Start with recent events .
- Start with the possible actions of the business .
Start with what happened recently , Can quickly find assumptions that explain the source of the problem . We can collect the recent positive / Negative events , Then look one by one :
Theoretically : What indicators have this event affected
actually : The extent of this event , Corresponding data changes
Check one by one like this , Find out the source of the problem .
Start with the possible actions of the business , Can quickly find the assumption of business response . For example, in the face of declining performance , In the short term, the business will be threefold :
- On sale , Send a bunch of coupons
- Training , Grasp several typical demonstrations
- Copy changing , Change the promotion links
that , We can list assumptions :
- According to the past input-output ratio , Promotion can improve performance
- The staff is uneven , There are benchmarks to refer to
- Promotion is uneven , There are benchmarks to refer to
Then check one by one .
The first 6 Step : Verify the truth
With hypotheses, we can verify . Be careful , Many daily data fluctuations , There are no resources for us to do it one by one ABtest To verify . So the verification here , More is to find evidence . Find enough 、 The obvious 、 Data evidence , To prove the point .
For example, I received the latest price adjustment information , So theoretically , If it is a best seller , Fast supply exceeds demand and price adjustment , It will increase income , The forced price adjustment of ordinary goods will only hurt sales . Then the idea of verification is :
- Past sales of price adjusted goods 、 How about inventory data ( Judgment type )
- When did the price adjustment begin , What's the change in sales after the adjustment
- How much influence does the price adjustment have , Remove this product , There are other problems
This comprehensive use of data , Can judge .
For example, let's suppose : Promotion can improve performance . Then you can take the previous promotion effect data for reference
- How much was invested at that time , For a few days
- How much did it improve at that time
- At present, according to this quantity , Can you fill the hole
This can also make a judgment : If there is a promotion now , It can save the situation , What other measures are needed .
The first 7 Step : Come to a conclusion
At this stage, we have done enough homework , When you hand in your homework , You can make a very detailed report :
- The current situation is very good / Is very poor , Manifested as ……( The first 123 Conclusion of step )
- Good current situation , Because ……( The first 4 Conclusion of step )
- The deeper reason is ……( The first 5 Conclusion of step )
- This good prediction can be sustained / Unsustainable , because ……( The first 6 Step conclusion )
therefore , Suggest ……( Continue to observe / Take measures to / Brainstorm further solutions )
In the attachment , Attach the detailed data process , It is comprehensive , There is depth again .
7 Sequence of steps
Be careful , this 7 step , You don't have to wait until the moment someone asks questions . because :
The first 1、2、3 Step , It's all about basic data interpretation , I can do it at ordinary times
The first 4 Step , Collect recent business actions , Industry events , I can do it at ordinary times
The first 4 Step , We should review the past actions of the business , There are records in history
Do your homework at ordinary times , It's time to do , In fact, only the 5 In this step, we use historical data to calculate and verify the impact .
So we often say , Data analysts want to enhance data insight , You have to accumulate more analytical experience , For specific business problems , Collect business actions , Multiple duplicate plates , Only in this way can we know more and more deeply . Every time a specific problem comes , Only then can there be rich ammunition depots available .
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