Thinker’s Game: why critical thinking is important and how to practice it?

"No problem can be solved from the same level of consciousness that created it."

Imagine yourself taking the blame for assessing that Iraq possessed WMDs. Various committees found that managers “did not encourage analysts to challenge their assumptions, fully consider alternative arguments” and that they were focused on the end results and not on the process [Moore: Critical thinking and intelligent analysis]. Thankfully most of us are not in […]

Review of Eric Siegel’s Predictive Analytics Book

Predictive Analytics book cover

Predictive Analytics: The Power to Predict Who Will Click, Buy, Lie, or Die by Eric Siegel is currently the number 1 book in various categories for a good reason. Eric has done a good job explaining what predictive analytics is and what it can be used for. He provides many case studies from various fields […]

Get Free Copies of the Tableau book

Tableau Data Visualization Cookbook was published on August 26th and my publisher, Packt Publishing, is offering free copies of the book in exchange for reviews on Amazon or on your blog. With this book, you can: Quickly create impressive and effective graphics which would usually take hours in other tools See lots of illustrations to […]

How to learn anything the hard way

a class under a tree

Learning a new skill is hard and takes a lot of efforts to learn it well. I have used these following steps to learn various things. It is painful going through this process, but at the end, the joy of knowing a skill easily removes that pain. Understand why you want to learn something. There […]

How to Perform Linear Regression in Excel

Anscombe's quartet

These instructions read better in this Linear Regression Excel Directions PDF file Linear Regression in Excel Introduction Linear regression is a statistical technique used to observe trends, determine correlation, and predict future observations. The underlying principle of this technique is called the least-squared, which is the process of minimizing the distance between the predicted value […]

What is Data Analytics or Data Science and How to Learn them for Free

Graduation Hat

UCLA‘s professor Jason Frand defines data mining as this: “data mining (sometimes called data or knowledge discovery) is the process of analyzing data from different perspectives and summarizing it into useful information – information that can be used to increase revenue, cuts costs, or both” To become an expert and actually get a job in […]

Mining publication data

Publications by year

I found treasure! Publication and citation data with metadata (author names, addresses, affiliation): http://citeseer.ist.psu.edu/oai.html I was reading about knowledge management here, which says that knowledge management is nonsense. I agree to a certain degree, not because of the field, but because of its name. How do you manage knowledge? Isn’t knowledge derived? Wasn’t information “science” […]

My experiments with sparklines

For the uninitiated, Sparklines are “data-intense, design-simple, word-sized graphics” according to its inventor Edward Tufte. I always wanted to include them in my trend reports. The challenge: How and Which tool to use? The data came from this report came from a complex query using SQL server and Access that had this format: College Major […]