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критерий Пирсона stresses
dat.proc.	Pearson's chi-square test (igisheva); Pearson's test (igisheva)
math., stat.	Pearson criterion
med.	X2 table
phys.	Pirson criterion (при анализе данных)
stat.	chi-square test for independence (Игорь_2006)

критерий Пирсона: 7 phrases in 5 subjects

Mathematics	2
Medical	1
Neural networks	1
Physics	1
Statistics	2