f{f_1} = {{\sum\limits_{k = 1}^K {s(k)} } \over k} | f{f_2} = {{\sum\limits_{k = 1}^K {{{\left( {s(k) - f{f_1}} \right)}^2}} } \over {k - 1}} | f{f_3} = {{\sum\limits_{k = 1}^K {{{\left( {s(k) - f{f_1}} \right)}^3}} } \over {k{{\left( {\sqrt {{p_2}} } \right)}^3}}} | f{f_4} = {{\sum\limits_{k = 1}^K {{{\left( {s(k) - f{f_1}} \right)}^4}} } \over {k \cdot ff_2^2}} |
f{f_5} = {{\sum\limits_{k = 1}^K {{f_k}s(k)} } \over {\sum\limits_{k = 1}^K {s(k)} }} | f{f_6} = \sqrt {{{\sum\limits_{k = 1}^K {{{\left( {{f_k} - f{f_5}} \right)}^2}s(k)} } \over k}} | f{f_7} = \sqrt {{{\sum\limits_{k = 1}^K {f_k^2s(k)} } \over {\sum\limits_{k = 1}^K {s(k)} }}} | f{f_8} = \sqrt {{{\sum\limits_{k = 1}^K {f_k^4s(k)} } \over {\sum\limits_{k = 1}^K {f_k^2s(k)} }}} |
f{f_9} = {{\sum\limits_{k = 1}^K {f_k^2s(k)} } \over {\sqrt {\sum\limits_{k = 1}^K {s(k)} \sum\limits_{k = 1}^K {f_k^4s(k)} } }} | f{f_{10}} = {{f{f_6}} \over {f{f_5}}} | f{f_{11}} = {{\sum\limits_{k = 1}^K {{{\left( {{f_k} - f{f_5}} \right)}^3}s(k)} } \over {kp_6^3}} | f{f_{12}} = {{\sum\limits_{k = 1}^K {{{\left( {{f_k} - f{f_5}} \right)}^4}s(k)} } \over {kp_6^4}} |
f{f_{13}} = {{\sum\limits_{k = 1}^K {{{\left( {\left| {{f_k} - {p_5}} \right|} \right)}^{{1 \over 2}}}s(k)} } \over {k\sqrt {{p_6}} }} | f{f_{14}} = {{\sum\limits_{k = 1}^K {{{\left( {{f_k} - f{f_5}} \right)}^2}s(k)} } \over {\sum\limits_{k = 1}^K {s(k)} }} | | |