ZhiZhi Gewu

Sign in Subscribe

Latest

Chapter 1 Summary of the Book: Effective Data Storytelling

I am currently reading a book called Effective Data Storytelling: How to Drive Change With Data, Narrative, and Visuals written by Brent Dykes. I found it quite enlightening, and want to write summary on each chapters for my own note taking, and at the same time, sharing with all of

The Tricky Conditional Probability

Date: 23 January 2021 Recently, I received an image, saying the Covid-19 test accuracy for positive cases is 93% and that for negative case is 99%. Does it say anything good or bad about the Covid-19 test? Are 93% and 99% good? Or is it bad that the test missed

Some Beginner Resources for Learning Data Visualization in Tableau

Date: 06 Jan 2021 Recently, I am preparing the launch of Tableau in my company. I have, therefore, collected some useful resources and want to share with my readers. General Learning Path 1. Understand the terminology used in Tableau 1. You may refer to this link. 2. Understand the Tableau

Data Governance V.S. Data Engineering V.S. Data Analysis

Date: 31 Dec 2020 Like most of you, when I tried to explore the career in data field, I want to be a data analyst. It is the sexiest job in 21st Century (according to Harvard Business Review. [an article titled: Data Scientist: The Sexiest Job of the 21st Century]

Can Invest Your Paycheck Make You Rich?

Date: 20 December 2020 Short answer: No, but better. To answer a question, we always start by making some assumptions, including Starting Salary, Inflation Rate, Salary Growth Rate, Salary Growth Rate, Expense Ratio, and Return on Investment. I am putting this calculation in the Hong Kong context and a typical

Typical Credit Risk Modelling

date: 6 Dec 2020 I will share what I know and some thoughts on developing credit risk model. Expected Loss The reason why expected loss is calculated is to determine how much capital a bank/Financial Institution (FI) should hold. The expected loss is not the only factor in determining

The Year 2021

Date: 29 November 2020 What do I want to achieve in the year 2021? Since the year 2018, I gave myself 3 goals per year. And, I spend my best time (in the morning) to achieve those goals. So far, this approach is very effective in achieving goals. But, when