Archives: September 2016
This is a story of my 11-year association with PASS, and the many ways it helped me grow as a person and in my career. And the many ways I saw other people grow.
Summit #1 – 2006: Gaylord,TX: I was a visa holding dba-developer at a small shop.… Read more
I was riding the elevator up from lunch today, at work. I am relatively new at my job and do not know several people at my workplace – yet. I live in a small town, and quite a lot of them know me as someone active in the local community.… Read more
In this post am going to attempt to explore a statistical procedure called ‘One Sample T Test’.
A T-Test is used to test the mean value of a data sample against a known mean of the entire population from where the sample came from. An example would be, if the… Read more
We’ve been doing SQLSaturdays for eight years at Louisville now. We’ve had a quite a wide range of budgets depending on the year – a good year (our highest was 2013) and lowest, the first year we started, 2009.
As main organizer, handling the dollars and making sure I spend… Read more
As I move on from descriptive and largely univariate (one variable based) analysis of data into more multivariate data – one of the first data analysis tests that came to mind is the Chi Square Test. It is a very commonly used test to understand relationships between two variables that… Read more
In this post I will attempt to explore calculation of a very basic statistic based on linear relationship between two variables. That is, a number that tells you if two numeric variables in a dataset are possibly correlated and if yes, by what degree. The Pearson’s coefficient is a number… Read more