虚无假设

null hypothesis (statistics)

emptiness / void / abstract theory or guiding principles / empty or unoccupied / diffident or timid / false / humble or modest / (of health) weak / virtual / in vain

nothingness

not to have / no / none / not / to lack / un- / -less

used in 假掰[gei1 bai1]

fake / false / artificial / to borrow / if / suppose

vacation

variant of 假[jia3] / to borrow

to suppose / to presume / to assume / supposing that ... / if / hypothesis / conjecture

to set up / to arrange / to establish / to found / to display