Deviazione standard

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Deviazione standard

$\begin{displaymath} \sigma _{i_{C}}=\sqrt{\overline{i_{C}^{2}}-\overline{i_{C}}^{2}}\end{displaymath}$

$\overline{i^{2}_{C}}=\frac{1}{N}\sum ^{N}_{k=1}i^{2}_{C}\left( kT_{C}\right) ... ...{1}{N}2\sum ^{N}_{k=1}U_{i_{C}\left( kT_{C}\right) }i_{C}\left( kT_{C}\right)$

$\overline{i_{C}}^{2}=\overline{i_{C}}\cdot \overline{i_{C}}\Rightarrow U_{\overline{i_{C}}^{2}}=2U_{\overline{i_{C}}}\overline{i_{C}}$

Quindi:

$\begin{displaymath} U_{\sigma }=\frac{1}{\sigma }\left( \frac{1}{N}\sum ^{N}_{k=... ...ft( kT_{C}\right) +U_{\overline{i_{C}}}\overline{i_{C}}\right) \end{displaymath}$

2001-10-22