×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

polynomial scatter band within excel min max plot

polynomial scatter band within excel min max plot

polynomial scatter band within excel min max plot

(OP)
I am trying to plot minimum and maximum lines on a polynomial scatter band within excel. I am able to plot the mean line ok but there doesn’t appear to be an option to actually plot a given 1.65 standard deviation above and below the line. There is an error bar and standard deviation function but it doesn’t actually plot these lines.

The Y-axis on my graph needs to be a logarithmic scale.

Does anyone know if this can be done in excel?

Regards

RE: polynomial scatter band within excel min max plot

I do not know exactly what do you wish:if you would like to plot only min and max line over the entire x-range  then simply add two columns at your x-y data range and the first has for all values of x the value of Ymin; the second has for all x- values the value of Ymax, but I think this is not the point. I suppose you would like to plot the upper and the lower confidence limits lines; regretfully excel does not provide them but you can easily construct them with some VBa programming. You should calculate  standard errors of the estimates of the coefficients of your polynomial regresson line and construc with those coefficients two more ranges of Y, Y-upper and Y-lower namely.
Is that what you would like to do?
m777182

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!


Resources