Posts Tagged ‘ mean ’

It is "simply" the average value

January 24, 2012
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It is "simply" the average value

for some obscure reasons, simple things are usually supposed to be simple. Recently, on the internet, I saw a lot of posts on the "average time in which you hold a stock", and two rather different values are mentioned "Take any stock in the United ...

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Simulation: Efficiency of mean with medianGoal: Show the…

October 31, 2011
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Simulation: Efficiency of mean with medianGoal: Show the…

Simulation: Efficiency of mean with medianGoal: Show the efficiency of the mean when compared with the median using a large simulation where both estimators are applied on a sample of U(0,1) uniformly distributed random numbers.Input:# Goal: Show...

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Example 9.9: Simplifying R using the mosaic package (part 1)

October 13, 2011
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Example 9.9: Simplifying R using the mosaic package (part 1)

While both SAS and R are powerful systems for statistical analysis, they can be frustrating to new users or those learning statistics for the first time. RThe mosaic package is designed to help simplify the interface for such new users, while allowing ...

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More useless statistics

August 22, 2011
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More useless statistics

Over at the ExploringDataBlog, Ron Pearson just wrote a post about the cases when means are useless. In fact, it’s possible to calculate a whole load of stats on your data and still not really understand it. The canonical dataset for demonstrating this (spoiler alert: if you are doing an intro to stats course, you

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