How to do a better fit?

I have used RooFit on the above distribution with a chi2/ndf value ~ 1.7. However, the 3 points above are being left behind always. I can’t seem to incorporate them without too much distortion. What can I do?( or should I leave it as it is?)

Hi Vikas,

Thanks for the post.
This does not seem a ROOT related issue, but rather something inherent to your analysis. I would consider changing the fitted distribution, if this makes sense with your statistical interpretation.