Blog Archives

Diagnosing the Multilevel Marketting Trap: How MLM Survives Only through New Entrants

October 23, 2015
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Diagnosing the Multilevel Marketting Trap: How MLM Survives Only through New Entrants

Over the years I have been amazed by how many friends of mine who seem otherwise very intelligent have gotten involved in Multilevel Marketing (MLM).And, as most people who have been involved with these organizations, all of my friends involved in thes...

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Debunking Magical 9s – Numerology or Numerical Illiteracy?

October 12, 2015
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Debunking Magical 9s – Numerology or Numerical Illiteracy?

The other day one of my friends on facebook posted this video about the mystical nature of the number 9. Being a skeptical of all think hokey, I decided to experiment with numbers to see how special 9 really is.There are four claims made in the video a...

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Flip a fair coin 4x. Probability of H following H is 40%???

October 9, 2015
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Flip a fair coin 4x. Probability of H following H is 40%???

A recent working paper has come out arguing for the existence of Hot Hands (in basketball), a concept psychologists had dismissed decades ago. Hot hands is where a player is thought to have a higher likelihood of scoring the next basket if the last three baskets where shot successfully. (In NBA...

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Base R Assessment!

February 3, 2015
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Base R Assessment!

Test your skills with this R-powered R assessment of base R knowledge! Built using the R powered adaptive testing platform Concerto, this assessment provides a short but powerful tool at evaluating your base R understanding relative to that of your pe...

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Convergence of a Series

November 12, 2014
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Convergence of a Series

Let us explore using simulation some of the concepts of basic asymptotic theory as presented in Wooldridge 2012, Chapter 3.Definition: A sequence of nonrandom numbers {a_N:N=1,2,...} converges to a if for all epsilon>0 there exists N_epsilon such that N>N_epsilon, then $$|a_N - a|<epsilon$$Paraphrase: A sequence converges on point a, if you can choose any positive number (any epsilon...

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Make your own hotly criticised circle graph!!!

November 3, 2014
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Make your own hotly criticised circle graph!!!

Make your own hotly criticized circle graph! The recent critical post on R-bloggers has got me wanting to make my own bubble graphs despite the popular criticism of the graph. After some attempts I have produced something that looks similar but needs s...

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Waterfall and 3D plotting exploration

October 9, 2014
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Waterfall and 3D plotting exploration

Taking the very 'waterfall graph' code posted by Robert Grant I have added some features (resistance Overall I find the graphs produced from this code to be beautiful and fascinating though I am not sure if I would really use them as a form of data exp...

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Julia style string literal interpolation in R

October 8, 2014
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Julia style string literal interpolation in R

I feel like a sculptor who has been using the same metal tools for the last four years and happened to have looked at my comrades and found them sporting new, sleek electric tools. Suddenly all of the hard work put into maintaining and adapting my meta...

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Ebola: Beds, Labs, and Warnings? Can they help? (Shiny App)

October 3, 2014
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Ebola: Beds, Labs, and Warnings? Can they help? (Shiny App)

A month ago when the WHO was projecting estimates of the effect of current outbreak of Ebola being as deadly as affecting 20,000 people, I ran some elementary modelling and found that these estimates are far too small given the current trend.  The...

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How do you say π^π^π?

September 15, 2014
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How do you say π^π^π?

Well, not that you really probably want to know how to say such an absurdly large number. However for those of you who are interested (allowing for rounding) it is:one quintillion, three hundred forty quadrillion, one hundred sixty-four trillion, one h...

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