Forecasting resourcing using S-Curve and Polynomials

JBKool

New Member
Joined
Apr 20, 2021
Messages
1
Office Version
  1. 365
Platform
  1. Windows
Hi everyone,

I'm trying to create a worksheet that will allow me to dynamically forecast resource requirements for projects.

The idea is that the sheet requires data relating to project start and end dates, as well as the estimated resource effort at the project's maximum. Using a 'standard' S-curve, I want to then apply that equation to forecast the resource requirements across the lifetime of the project.

Having plotted my standard S-Curve over a 12-month period and generating a polynomial equation, I can then apply that equation to each period to generate the resource estimate by month. So far so good. The issue is that the equation is only good for projects that are exactly 12-months. Is there anyway to create a formula / equation that can use a similar distribution that flexes when the period changes (i.e. the S-curve becomes simplified as the time period compresses, but more detailed and subtle as the time period increases, but generally keeps to the same curve).

This might not be the best way to do this, so any other suggestions of how I can create a formula that uses a 'standard' series of multipliers that can be scaled up and down would be helpful.

Cheers
 

Excel Facts

How to fill five years of quarters?
Type 1Q-2023 in a cell. Grab the fill handle and drag down or right. After 4Q-2023, Excel will jump to 1Q-2024. Dash can be any character.

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