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What tool would *you* use to solve this?

nrich.maths.org

21–30 of 57 posts

Re: What tool would *you* use to solve this?

#22
I would use one of these two tools:

Orange http://orange.biolab.si/ "Open source data visualization and analysis for novice and experts. Data mining through visual programming or Python scripting. Components for machine learning. Extensions for bioinformatics and text mining. Packed with features for data analytics."

Weka http://www.cs.waikato.ac.nz/ml/weka/ "Weka is a collection of machine learning algorithms for data mining tasks. The algorithms can either be applied directly to a dataset or called from your own Java code. Weka contains tools for data pre-processing, classification, regression, clustering, association rules, and visualization. It is also well-suited for developing new machine learning schemes."

Re: What tool would *you* use to solve this?

#25
I would use my right hand to slap Alison and Charlie and get them to do their work again... this time forcing them to label their samples.

I would then take them into my office and hold an inquest on how two completely different data-sets got mixed up in the first place.

At which point I would probably find out Alison and Charlie have been knocking boots on company time.. Alison and Charlie would then be fired as this is against company policy.

Due to the difficulty in finding new jobs Alison and Charlie's fledgling romance would end... leaving Alison unexpectedly pregnant and Charlie with an 18 year bill for child support.

The morale of this story? Label your fking work.

Note: I was unable to solve this problem as my math skills are poor.

Re: What tool would *you* use to solve this?

#27

Several people have said they would, or have, ploted histograms - but how? * By hand? * With Excel? * With R? * With processing? I'm a little sad to see that this item has been flagged heavily, but I guess there are people who think this is sufficiently off-topic that it should be in the same category as spam.

use R

#copy data into a txt file without the first two lines from the xls

par(mfrow = c(3,2))

dat for(let in c("A","B","C","D","E","F"))

plot(density(dat[,let]), main = let)

easy...(why doesnt HN recognise newlines?)

Re: What tool would *you* use to solve this?

#28

I would use my right hand to slap Alison and Charlie and get them to do their work again... this time forcing them to label their samples. I would then take them into my office and hold an inquest on how two completely different data-sets got mixed up in the first place. At which point I would probably find out Alison and Charlie have been knocking boots on company time.. Alison and Charlie would then be fired as thi…

You're on the management fast track aren't you ?

Re: What tool would *you* use to solve this?

#30
post #16

I used my app https://app.prettygraph.com to quickly look at the histograms. B and F look almost identical with a very normal distribution. The others look more like twin-peaks. Edit: If you want to try, copy the data and click the "Paste data from Excel link" on the left under the Data Tab, paste and load. Then choose histogram under the Graph tab. It plots the X var (ignores Y). Sorry it's a bit shabby, I haven't w…

Nice app! Computing the histogram hung on the Apple stock data for me.
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