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Measuring Validity and Reliability of Human Ratings

The Unofficial Google Data Science Blog

Editor's note : The relationship between reliability and validity are somewhat analogous to that between the notions of statistical uncertainty and representational uncertainty introduced in an earlier post. If they roll two dice and apply a label if the dice rolls sum to 12 they will agree 85% of the time, purely by chance.

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Great Storytelling With Data: Visualize Simply And Focus Obsessively

Occam's Razor

When you are presenting, to an audience of 3 or 3,000, your goal should be to get the data out of the way as fast as you can, so that you can move to the so what conversation. There are many standard data presentation strategies you should use all the time. conversion rate (it might not be statistically significant!).