macrosoal2a x y z

mconstant i n ada s mean sigma2 a sigma b cmcolumn x y zlet n=count(x)

do i=1:nif x(i)='*'

let y(i)=1elselet y(i)=0

endifenddo

let ada=0do i=1:n

let ada=ada+y(i)enddo

let a=n-ada

do i=1:nif x(i)='*'

let z(i)=0elselet z(i)=x(i)

endifenddo

let mean=0do i=1:n

let mean=mean+z(i)/aenddo

let sigma2=0do i=1:n

if z(i)=0let sigma2=sigma2+0elselet sigma2=sigma2+((z(i)-mean)^2)/(a-1)

endifenddo

let sigma=sigma2^0.5

let b=0do i=1:n

if z(i)=0let b=b+0elselet b=b+(((z(i)-mean)/sigma)^3)

endifenddo

let c=(a/((a-1)*(a-2)))*b

name c'skewness'name ada 'banyak nilai missing'print c ada

endmacro