# Blog Archives

## R Resources

March 13, 2014
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I am listing some useful R resources. I start with the following post on (free) R Books from R-bloggers.com. An R "Meta" Book by Joseph Rickerthttp://www.r-bloggers.com/an-r-meta-book/ This page lists some e-books or e-materials for various topics in statistics ranging from basis concepts of statistics to advanced methods such as survival analysis and time series analysis. On Experimental Design An R...

## Poisson approximation of binomial probabilities

March 1, 2012
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This is yet another experiment to see how good is the approximation of binomial probability when we use Poisson and normal distributions for scenarios with large \$n\$, and \$p\$ close to zero or one. Consider a problem where the random variable \$X\$ follows a binomial distribution with a known probability of success \$p\$, and number of trials \$n\$. If \$n\$...

## How to do this graph using R

April 26, 2010
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I am showing three examples that will help an average R user to create beautiful graphs. The interesting (may be useful) parts of these examples are the use of some very smart but tricky functions to, for example, add a Greek symbol on a plot, add a title to a plot with some mathematical symbols. I am showing three...

## 3d scatter plot using R

January 6, 2010
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The other day I saw a three dimensional scatterplot in Montgomery's Regression book. I wanted to redraw the graph using the provided data. A simple google search revealed that there is a package called scatterplot3d. The scatterplot3d() can be used to draw a 3-dimensional scatter plot. Here is what the steps are: Download and install the package from your nearest...