If \(\mu_1,\mu_2\) and \(\mu_3\) are the mean, median and mode respectively of a normal distribution, then
\[
3(\text{Median})-2(\text{Mode})
=
?
\]
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Remember the standard empirical relation:
\[
\text{Mode}=3(\text{Median})-2(\text{Mean}).
\]
It is one of the most important formulas in descriptive statistics.