Thursday, October 25, 2012

Understanding the Sign of Correlation Coefficient

In many books on Statistics, it is often stated that correlation between two variables X and Y is positive if, as X increases Y also increase. This interesting article by Dr. Sudhakar Kunte shows that this statement is not always correct:

Tuesday, October 23, 2012

J D Gibbons

J D Gibbons ...whom we all know for her book on Non-parametric Inference. She blazed a trail for providing opportunities to future generations, by establishing funds for JD Gibbons Statistics Award and Gibbons fellowship for graduate studies in Statistics:

Here is an article by her, mostly about her experiences as a female Statistician and how the society evolved over time to accept women in academia:

Saturday, October 20, 2012

Happy World Statistics Day

In the words of a non-statistician Sir Arthur Conan Doyle, who is immortalized because of his brain-child Sherlock Holmes ...

"While the individual man is an insoluble puzzle, in the aggregate he becomes a mathematical certainty. You can, for example, never foretell what any one man will be up to, but you can say with precision what an average number will be up to. Individuals vary, but percentages remain constant. So says the statistician"

Wishing a very happy World Statistics Day to everyone :) :)

Friday, October 19, 2012