Normal (or Gaussian) distribution (bell curve) graph visualize a continuous probability distribution that is often used as a first approximation to describe real-valued random variables that tend to cluster around a single mean value.
The template "Normal distribution graph" for the ConceptDraw PRO diagramming and vector drawing software is included in the Marketing Diagrams solution from the Marketing area of ConceptDraw Solution Park.
www.conceptdraw.com/solution-park/marketing-diagrams