After some time, the rate of growth decreases and the function levels off, forming a sigmoid, or s-shaped curve. For example ... logistic growth and can chart them on a line graph.

When plotted on graph, this pattern of growth takes the shape of an "S." While this S-curve has long been recognized by economists and scientists, a Duke University professor believes that a ...

They follow the same pattern. Ultimately, the length of one of the familiar S-shaped curves that we see in rivers is around six times the width of the channel. And we find this time and time again.

A bell curve is a graph depicting the normal distribution, which has a shape reminiscent of a bell ... Its standard deviation depicts the bell curve's relative width around the mean.