Percentile issue in Pbi

[lvtruong]

Dear bros, I have a issue with Percentitle Function in PBI. We have: Percentile.INC, Percentile.ENC, PercentileX.INC, PercentileX.ENC. OK? ^^ Example: I have a table with 2 column(10 record): Name (A-K)+ Value(1-10). I using Percentile.INC (Value,0.2), result: Value = 2.8 Percentile.EXC (Value,0.2), result: Value = 2.2 Why have difference results between Percentile.INC and Percentile.EXC? ------ In Oracle, Percentile Function computed: Max(Rank of Value) * 0.2 to get position of value percentile. Nevertheless, PBI get difference position of value. Pls, help me! Tks so much...