If mean, median, mode and standard deviation are known for a given data set, the Pearson's first skewness coefficient is equal to
1
\(\frac{{3(Mean - Median)}}{\sigma }\)
2
\(\frac{{3(Mean - Mode)}}{\sigma }\)
3
\(\frac{{3(Mean + Medium)}}{{\sigma}}\)
4
\(\frac{{3(Mean + S\tan darddeviation)}}{{Mean}}\)