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| -------------------------------------------------------Σ( lnxi) | 2 | 1 | (Σ lnx) | 2 | |
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• | = A + B (ln x) |
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Power Curve Fit
•y = AxB (A>0)
•ln y = ln A + Bln x
(Σ lnxi)(Σ lnyi) | |||
B = | n | (Σ lnxi)2 | |
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Σ( lnxi) | 2 | – | |
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•
A | = exp |
| Σ lnyi | – B | Σ lnxi |
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= AxB
Standard Error of the Mean
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SX | SX | Sy | Sy |
= | = | ||
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Mean, Standard Deviation, Standard Error for Grouped Data
160