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Answering Why (with Chi-Square)

Analysts don’t like the “why” questions. They are tough to answer. For instance, in a help desk analysis, it is easy to show which tickets are resolved faster. But it is difficult to say why. In my practice in Sopra

Pawel Plaszczak November 19, 2021November 20, 2021 Articles No Comments Read more

Don’t trust Data Science. Ask the people

Can intuition beat the popular data science tools? Is SelectKBest, the popular feature selection method, wrong? Here is a story of a recent project. The story ends with a puzzle which I cannot solve. Help is welcome. Both data and

Pawel Plaszczak October 24, 2021November 29, 2021 Articles 1 Comment Read more

Data Puzzle

Here is a new data puzzle, coming from my recent analytics in Sopra Steria. I will describe the problem, but not the answer. If you like the challenge, please contribute your thoughts in the comments. The title of the data

Pawel Plaszczak March 24, 2021March 29, 2021 Articles 4 Comments Read more

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