Statistical DAX patterns
Statistical explained on DAX patterns site
 Average/Mean DAX functions: AVERAGE, AVERAGEA, AVERAGEX
 Moving Average (basic/advanced)
 Variance DAX functions: VAR.S, VAR.P, VARX.S, VARX.P
 Standard Deviation DAX functions: STDEV.S, STDEV.P, STDEVX.S, STDEVX.P
 Median (basic/advanced)
 Mode
 Percentile (basic/advanced)

Quartiles can be calculated using the Percentile pattern.
 Linear regression
 Pearson correlation coefficient