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slib_lang_exists_tmp=yes
slib_title=Variance
slib_parms=1\
,[data] or [data],[weight]
slib_out=standard variance of data x_1,..,x_n = sum(x_i^2-mean)/n, sum(x_i^2-mean)/(n-1)
slib_comment=Data and weight can be recognized under many formats, \
in particular as a matrix (with data before weight).