X()0O MYC-PS/8 FOCAL, 1971?ML,F(S SD=FSQT((Q1-S1^2/N1)/(N1-1))?MCDGFS N1=0;S S1=0;S S2=0;S SQ=0;S Q1=0;S DD=0;S D=0;S Q2=0?MCQGPD 3.7; F I=1,N; D 8?MOGZD 3.7; F I=1,N; D 9?MC