SmoothHistogram

SmoothHistogram[{x1,x2,…}] plots a smooth kernel histogram for the PDF of the values xi.

SmoothHistogram[{x1,x2,…},espec] plots a smooth kernel histogram with estimator specification espec.

SmoothHistogram[{x1,x2,…},espec,dfun] plots the distribution function dfun. 

SmoothHistogram[{data1,data2,…},…] plots smooth kernel histograms for multiple datasets datai.

Please visit the official Wolfram Language Reference for more details and examples on core symbols.