Labor Distribution Curve

[fishon]

Here’s what I’d love to achieve (although I’d settle for a program or macro that works in or exports to Excel to generate a Gaussian (Bell) Curve if this doesn’t exist):



1. A typical construction curve for labor hours over time (preferably Electrical Contracting – NECA has these on paper but I’ve never seen anything electronic – still, it closely resembles a slightly flattened bell curve)

2. Values we know:

a. Total labor hours

b. Mean labor hours

c. Duration in months

d. First and last month hours

3. Ultimately, I don’t even need the curve but the random number generator needs to follow the curve. I need labor hours per month knowing total hours, mean hours, hours first and last month (not even necessary but can be provided if it helps), and this needs to go into Excel.



Hope this makes sense – thanks for the help.

 

[Denial]

I am not all that sure what it is you are trying to do. If you are trying to generate random numbers that will follow a normal distribution, then you can use the NORMINV function in conjunction with the RAND function to achieve exactly want:

=NORMINV( RAND(), Mean, StdDev )