SmoothKernelDistribution
SmoothKernelDistribution[{x1,x2,…}] represents a smooth kernel distribution based on the data values xi.
SmoothKernelDistribution[{{x1,y1,…},{x2,y2,…},…}] represents a multivariate smooth kernel distribution based on the data values {xi,yi,…}.
SmoothKernelDistribution[…,bw] represents a smooth kernel distribution with bandwidth bw.
SmoothKernelDistribution[…,bw,ker] represents a smooth kernel distribution with bandwidth bw and smoothing kernel ker.
Please visit the official Wolfram Language Reference for more details and examples on core symbols.