it was cotton candy puffs...
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In statistics, this is the symbol for the "Variance"
A person who is professionally qualified to work with statistics is a 'statitician'. (STAT-iss-TISH-un)
They are statistics of central tendency.
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SE stands for ''standard error'' in statistics. Thanx Sylvia It is the same as the standard deviation of a sampling distribution, such as the sampling distribution of the mean.