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Analytics

Monte Carlo distribution of skewness statistic (B=10000, N=100)

Rick WicklinOctober 28, 2020 0

The sample skewness is a biased statistic

The skewness of a distribution indicates whether a distribution is symmetric or not. The Wikipedia article about skewness discusses two common definitions for the sample skewness, including the definition used by SAS. In the middle of the article, you will discover the following sentence: In general, the [estimators] are both

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Analytics

Harry SnartOctober 27, 2020 0

Data science in the wild: The data science playground problem

You’ve finally done it. You managed to stay awake through the endless series of MOOC videos, and you’ve mastered the IRIS data set. You've learned that lm() will build you a pretty nifty model in R, and you can fit a Classifier with SciKit Learn. You know your Neural Net

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Analytics | Data for Good | Students & Educators

Jen SabourinOctober 27, 2020 0

Data visualizations: What are they really communicating?

Editor's note: This blog post is the first in a series of posts, originally published here by our partner News Literacy Project, exploring the role of data in understanding our world. Charts and graphs are useful tools for communicating complex information. They allow consumers to see — rather than read or calculate — differences

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Education

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