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Level II

Quantile (Percentile) Calculation

I have a dataset of 10 numbers: 2,4,5,8,9,10,13,15,17, and 20. I pull those into JMP and split them up in a tabulate table into Quantiles. Output is at Quantiles 5, the value is 2, at quantiles 10 the value is 2.2 and so on. How are these calculated? Thank you! 

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