ZhiZhi Gewu

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making sense of data

Visualize Your Data: Making Sense of Data Chapter 4

Chapter 4 covers some basic charts that will be used to visualize data. I think most of my readers would know those charts very well. But, I would still like to recap some important points. Still, I learned some new things as well, such as Pareto Charts, and recalled some

Visualize Your Process: Making Sense of Data Chapter 2

In Chapter 2, the author introduces tools to visualize systems and processes. It mainly covers Brainstorming, Flowchart, Deployment Flowchart, PERT Diagram, Cause-and-Effect Diagram. It may seem elementary. But I still find it rewarding, and I have summarized the learnings in the following paragraphs. First, honesty is a prerequisite for useful

Collecting Good Data: Making Sense of Data Chapter 3

Chapter 2 discusses how to visualize processes and systems. Chapter 3 talks about some issues in collecting data so that we can avoid them when analyzing systems. The chapter mainly consists of three parts: general requirements to collect good data, definitions that are operational, and some common pitfalls in interpreting

Why Continual Improvement? Making Sense of Data Chapter 1

Making Sense of Data, Donald J. Wheeler The chapter inspires me a lot. As a data professional, I believe in accurate measurements. We set metrics, KPI for our organizations to monitor how well our business performs. The metrics and KPI are usually result-oriented, for example, how many delinquency cases, how