Difference between revisions of "Talk:2892: Banana Prices"
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Is it a linear extrapolation? Or does it only appear so because the Y axis is logarithmic? Inflation is logarithmic, since it's expressed in percentages. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 17:04, 9 February 2024 (UTC) | Is it a linear extrapolation? Or does it only appear so because the Y axis is logarithmic? Inflation is logarithmic, since it's expressed in percentages. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 17:04, 9 February 2024 (UTC) | ||
| + | :Well, the lines of extrapolation are (invoked as) linear, by dint of the height above the baseline being preconverted to a logarithmic function of the represented axial value. Rather than taking expoenential-style extrapolation of data and 'happening' to linearise it through the subsequent transformation, it is almost certainly going to have been metely establishing some future trend point(s) through which such an exponential would pass and using that to directly guide the linear plot that (on the converted scale) is the functionally equivalent result to doing it with ''every'' point. [[Special:Contributions/172.71.178.77|172.71.178.77]] 17:26, 9 February 2024 (UTC) | ||
Revision as of 17:26, 9 February 2024
Is it a linear extrapolation? Or does it only appear so because the Y axis is logarithmic? Inflation is logarithmic, since it's expressed in percentages. Barmar (talk) 17:04, 9 February 2024 (UTC)
- Well, the lines of extrapolation are (invoked as) linear, by dint of the height above the baseline being preconverted to a logarithmic function of the represented axial value. Rather than taking expoenential-style extrapolation of data and 'happening' to linearise it through the subsequent transformation, it is almost certainly going to have been metely establishing some future trend point(s) through which such an exponential would pass and using that to directly guide the linear plot that (on the converted scale) is the functionally equivalent result to doing it with every point. 172.71.178.77 17:26, 9 February 2024 (UTC)
