Table 1.

Statistical features extraction.

$F_1=\frac{1}{N}\sum _{k=1}^{N}x\left(k\right)$	mean	(1)
$F_2=\sqrt{\frac{1}{N-1}\sum _{k=1}^N{\left(x\left(k\right)-F_1\right)}^2}$	standard deviation	(2)
$F_3=\underset{1\le k\le N}{\max }\left(x\left(k\right)\right)$	maximum	(3)
$F_4=\underset{1\le k\le N}{\min }\left(x\left(k\right)\right)$	minimum	(4)
$F_5={\left(\prod _{k=1}^{N}x\left(k\right)\right)}^{\frac{1}{N}}$	geometric mean	(5)