Orchestration of thoughts

Orchestration of thoughts

Maheshwaran Subramaniya  //  A computer science engineer and mac geek, who pour thoughts on technology, computer science, mathematics and other thoughtful stuffs.

I'm blogging at My Mind Leaks ( http://mymindleaks.com )

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Jun 27 / 8:08am

Histogram helps determining the type of statistical distribution

It was a pain time for me to learn how to determine which statistical distribution does a given set of data obeys. You have various probabilistic distribution like Geometric, Normal, Poisson  distribution. Unless you determine how your data is distributed , you cant choose the appropriate tool.

Here is the data stream.
4 3 2 6 8 7 5 6 7 3 4 5 5 6 4 5


Are you able to identify which distribution does this number following? By looking at it, it's pretty difficult to determine  what kind of distribution it does follows.

Now just feel how histogram will help you to visualize what kind of distribution did the data follows.


Now this histogram provides a pattern on how the data is distributed. Can you identify the pattern?

Let me show you another visualization of the same data.

Now? Hope you would have identified now. Yes, the data follows a Normal distribution. The histogram will help you to determine it.

If your data point is large enough, the bars will gets close enough and all those bars be filled within the curve and looks like an area filled inside the curve.

Filed under  //  mathematics   statistics   tutorials  

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