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14 razones por la que R es mejor que Excel(c)


14 Reasons Why R is better than Excel

This article was first published on Revolutions

The Fantasy Football Analytics blog shares these 14 reasons why R is better than Excel for data analysis:

  1. More powerful data manipulation capabilities
  2. Easier automation
  3. Faster computation
  4. It reads any type of data
  5. Easier project organization
  6. It supports larger data sets
  7. Reproducibility (important for detecting errors)
  8. Easier to find and fix errors
  9. It’s free
  10. It’s open source
  11. Advanced Statistics capabilities
  12. State-of-the-art graphics
  13. It runs on many platforms
  14. Anyone can contribute packages to improve its functionality

The two most important in my mind are #2 (automation) and #7 (reproducibility), reasons that apply to any GUI-driven tool. The ability to use code to repeat your analyses and reproduce the results consistently cannot be overstated.

For more detailed background behind each of these reasons, and four situations where it’s best to use Excel, check out the complete blog blost linked below.

Fantasy Football Analytics: Why R is Better Than Excel for Fantasy Football (and most other) Data Analysis


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Sábado, 11 de octubre de 2014 Sin comentarios

In Memoriam: Susie


 

[Here is  is a poewritten by Kerrie for the last ISBA cabaret in Cancun, to Susie who could not make it to a Valencia meeting for the first time… Along with a picture of Susie, Alicia and Jennifer taking part in another ISBA cabaret in Knossos, Crete, in 2000.]

This is a parody of a classic Australian bush poem, ‘The Man from Snowy River’, that talks of an amazing horseman in the rugged mountain bush of Australia, who out-performed the ‘cracks’ and became a legend. That’s how I think of Susie, so this very bad poem comes with a big thanks for being such an inspiration, a great colleague and a good friend.

There was movement in the stats world as the emails caught alight
For the cult from Reverend Bayes had got away
And had joined the ‘ISBA’ forces, and were calling for a fight
So all the cracks had gathered to the fray.

All the noted statisticians from the countries near and far
Had flown into Cancun overnight
For the Bayesians love their meetings where the sandy beaches are
And the Fishers snuffed the battle with delight.

There were Jim and Ed and Robert, who were ‘fathers of the Bayes’
They were known as the whiskey drinking crowd
But they’d invented all the theory in those Valencia days
Yes, they were smart, but oh boy were they loud!

And Jose M Bernardo came down to lend a hand
A finer Bayesian never wrote a prior
And Mike West, Duke of Bayesians, also joined the band
And brought down all the graduates he could hire

Sonia and Maria strapped their laptops to the cause
And Anto, Chris and Peter ran – in thongs!
Sirs Adrian and David came with armour and a horse
While Brad and Gareth murdered battle songs

And one was there, a Spaniard, blonde and fierce and proud
With a passion for statistics and for fun
She’d been there with the founders of the nouveau Bayesian crowd
And kept those Fisher stats folk on the run

But Jim’s subjective prior made him doubt her power to fight
Mike Goldstein said, ‘That girl will never do,
In the heat of battle, deary, you just don’t have the might
This stoush will be too rough for such as you.’

 But Berger and Bernardo came to Susie’s side
We think we ought to let her in, they said
For we warrant she’ll be with us when the blood has fairly dried
For Susie is Valencia born and bred.

She did her Bayesian training in the classic Spanish way
Where the stats is twice as hard and twice as rough
And she knows nonparametrics, which is useful in a fray
She’s soft outside, but inside, man she’s tough!

She went. They found those Fisher stats folk sunning on the beach
And as they grabbed their laptops from the sand
Jim Berger muttered fiercely, ‘right, twist any head you reach
We cannot let those Fish get out of hand.’

Alicia, grab a Dirichlet and break them with a stick
Chris, it’s easy, just like ABC
And Sylvia, a mixture model ought to do the trick
But just you leave that Ronnie up to me.

Jose battled them with inference and curdled Neyman’s blood
And Ed told jokes that made them shake their head
And posteriors lined like beaches like sandbags for a flood
And Jim threw whiskey bottles as they fled.

And when the Bayesians and the Fishers were washed up on the sand
The fight was almost judged to be a tie
But it was Susie who kept going, who led the final charge
For she didn’t want objective Bayes to die

She sent the beach on fire as she galloped through the fray
Hurling P and F tests through the foam
‘til the Fishers raised surrender and called the fight a day
And shut their laptops down and sailed for home.

And now at ISBA meetings where the Bayesians spend their days
To laugh and learn and share a drink or two
A glass is always toasted: to Susie, Queen of Bayes
And the cheering echoes loudly round the crew.

She will be remembered for setting Bayesian stats on fire
For her contributions to the field are long
And her passion and her laughter will continue to inspire
The Bayesian from Valencia lives on!


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Jueves, 21 de agosto de 2014 Sin comentarios

De cómo un p-valor o un Intervalo de Confianza puede mentir!!!


Interesante entrada en este Blog… más de un revisor de revistas de Alto Impacto debería leérselo.

 

Is difference in proportion appropriate measure to compare performance of a drug over another one?

 

ENLACE


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Lunes, 21 de julio de 2014 Sin comentarios

Entrevista en la Radio-UMH


150414 Programa CIO

Entrevistas a los investigadores Mª Asunción Martínez y Xabier Barber, del grupo de investigación `Modelos y Aplicaciones Estadística en Prospectiva´.

Radio-UMH

Entrevista Radio


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Miércoles, 16 de abril de 2014 Sin comentarios