CelloMomOnCars ,
@CelloMomOnCars@mastodon.social avatar

If you don't have data over at least a factor of ten (but preferably a factor 100),
DON"T CALL IT "EXPONENTIAL"


skaphle ,

@CelloMomOnCars Sounds right at first but the definition of exponential is not that something gets high from a low number but that you can describe it with an exponential function. Idealized economies also grow exponentially with something like 2% in a year.

martinvermeer ,
@martinvermeer@fediscience.org avatar

@skaphle @CelloMomOnCars Yep, but you cannot do a meaningful fit to distinguish an exponential curve from, e.g., a power-law or polynomial one unless you have two-three orders of magnitude of data. So there, the OP was right. But yes, having a large data range doesn't guarantee that it is exponential...

CelloMomOnCars OP ,
@CelloMomOnCars@mastodon.social avatar

@martinvermeer

Right-o. For the first few years, 2% per annum growth just looks like a linear increase.

@skaphle

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