Events kept +/- in MadAnalysis 5 report

[shangliang]

Dear,

This is an example of a piece of MadAnalysis report, so I am wondering what's the meaning of the number after +/- and how to calculate this number in the code of MadAnalysis.

Dataset Events kept: K Rejected events: R Efficiency: K / (K + R) Cumul. efficiency: K / Initial
b1500 1.47 +/- 1.03 3.76 +/- 1.03 0.281 +/- 0.197 0.281 +/- 0.197
b2000 0.27 +/- 0.44 0.720 +/- 0.443 0.272 +/- 0.447 0.272 +/- 0.447

Thank you very much,
Liang

[shangliang]

This has been solved. Thank you.