The original version of this paper was published here in May 2009:
See S-curve/intro.htm

This 4th Edition was submitted for publication in January 2019.
It is copyright © Midori Media.
Published here July 2019.

Editor's Note and Introduction | What is an S‑curve? |
Types of S‑curvesBaseline, Target, Actual, Man Hours vs Time
Cost vs Time | Value and Percentage | PART 2

What is an S-curve?

An S-curve is defined as:

"A display of cumulative costs, labor hours or other quantities plotted against time. The name derives from the S‑like shape of the curve, flatter at the beginning and end and steeper in the middle, which is typical of most projects. The beginning represents a slow, deliberate but accelerating start, while the end represents a deceleration as the work runs out."[1]

***  Editor's Note and Introduction

1. Source: Wideman Comparative Glossary of Common Project Management Terms v2.1 Copyright R. Max Wideman, May 2001
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