Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Labor Distribution Curve

Labor Distribution Curve

Labor Distribution Curve

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.

RE: Labor Distribution Curve

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 )

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close