Difference between revisions of "FitLogistic Command"
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(* If you work with big/small numbers, you should consider normalizing them for a more accurate result, see Normalize Command.) |
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<noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|statistics}} | <noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|statistics}} | ||
− | ;FitLogistic | + | ;FitLogistic( <List of Points> ) |
:Calculates the regression curve in the form a/(1 + b e^(-kx)). | :Calculates the regression curve in the form a/(1 + b e^(-kx)). | ||
− | :{{example|1= | + | :{{example|1=<code><nowiki>FitLogistic({(-6, 2), (0, 2), (3, 4), (3.4, 8)})</nowiki></code> yields <math> \frac{1.98}{1 - 0.03 e^{1x}}</math>.}} |
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{{Note|1=<div> | {{Note|1=<div> | ||
*The first and last data points should be fairly close to the curve. The list should have at least 3 points, preferably more. | *The first and last data points should be fairly close to the curve. The list should have at least 3 points, preferably more. | ||
− | *See also [[Fit Command|Fit]], [[FitExp Command|FitExp]], [[FitGrowth Command|FitGrowth]], [[FitLine Command|FitLine]], [[FitLineX Command|FitLineX]], [[FitLog Command|FitLog]], [[FitPoly Command|FitPoly]], [[FitPow Command|FitPow]] and [[FitSin Command|FitSin]].</div>}} | + | *See also [[Fit Command|Fit]], [[FitExp Command|FitExp]], [[FitGrowth Command|FitGrowth]], [[FitLine Command|FitLine]], [[FitLineX Command|FitLineX]], [[FitLog Command|FitLog]], [[FitPoly Command|FitPoly]], [[FitPow Command|FitPow]] and [[FitSin Command|FitSin]]. |
+ | * If you work with big/small numbers, you should consider normalizing them for a more accurate result, see [[Normalize Command]]. | ||
+ | </div>}} |
Latest revision as of 12:41, 4 February 2019
- FitLogistic( <List of Points> )
- Calculates the regression curve in the form a/(1 + b e^(-kx)).
- Example:
FitLogistic({(-6, 2), (0, 2), (3, 4), (3.4, 8)})
yields \frac{1.98}{1 - 0.03 e^{1x}}.
Note:
- The first and last data points should be fairly close to the curve. The list should have at least 3 points, preferably more.
- See also Fit, FitExp, FitGrowth, FitLine, FitLineX, FitLog, FitPoly, FitPow and FitSin.
- If you work with big/small numbers, you should consider normalizing them for a more accurate result, see Normalize Command.