Question

what differences do you see between these distributions?this is normal:points of inflectionthis is not normal:frequencyboth panels show the same normal model with inflection points at two standard deviations.the left panel is bimodal and the right panel is uniform.the histogram on the right is symmetric with inflection points at ±2σ.the normal distribution has inflection points that are standard deviation away from the mean. the distribution that is not normal is bimodal in shape.

Explanation:

The top panel is a normal (unimodal, symmetric) distribution with inflection points at $\mu \pm 1\sigma$. The bottom histogram is a bimodal, non-normal distribution with two distinct peaks, lacking the symmetric, single-peak shape and defined inflection points of a normal model.

Answer:

The normal distribution (top panel) is unimodal, symmetric, with inflection points at one standard deviation from the mean ($\mu \pm 1\sigma$). The bottom histogram is a bimodal, non-normal distribution with two separate peaks, and it does not have the characteristic symmetric, bell-shaped form or defined inflection points of a normal model.