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верхний квартиль stresses
gen.	top quartile (ABelonogov)
math.	higher quartile
stat.	upper quartile
верхняя квартиль
gen.	top quartile (ABelonogov)
Makarov.	higher quartile
tech.	upper quartile (third quartile (designated Q3) = upper quartile = splits highest 25% of data, or lowest 75% = 75th percentile. WAD Alexander Demidov)

верхний квартиль: 3 phrases in 2 subjects

Electrical engineering	1
Statistics	2