Question

what visual cue suggests that a histogram can be approximated by a normal curve?
uniform height of bars
data clusters on one end
symmetrical, bell - shaped pattern
repeating bar heights

Explanation:

A normal curve is defined by its symmetrical, bell-shaped form. A histogram matching this shape can be approximated by a normal curve. Uniform bar heights describe a uniform distribution, clustering at one end describes a skewed distribution, and repeating bar heights do not match the normal curve's characteristic shape.

Answer:

Symmetrical, bell-shaped pattern