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reply quickly! Exponential line of best fit
23-11-2010, 03:30 PM
Post: #1
reply quickly! Exponential line of best fit
Hi,

I\'ve got a data set which i\'m pretty sure fits onto an exponential graph or a hyperbolic graph

It\'s population data of a country, and I wish to fit it to a graph, only i\'m not sure how to make the best fit line one which is exponential/hyperbolic. The reason I need this is because i\'m fairly sure population growth isn\'t going to be a parabola, or for that matter dropping below zero, which is basically what I get when i go up to order 9 on the best fit binomial dialogue.

ANY HELP would be GREATLY APPRECIATED Big Grin

....and soon too haha this is due fairly soon.

CHEERS Big Grin
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24-11-2010, 05:08 PM
Post: #2
Re: reply quickly! Exponential line of best fit
Dear geCrank,

Try plotting an exponential function y = aexp(bx + c) + d and then use the constant controller to change the values of  a, b, c and d to see if you can improve the fit.

Then select the function and the dataset, right-click and choose Fit to Data.

Best regards,

Simon
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