Asian-Pacific Journal of Second and Foreign Language Education

Table 7 Regression analysis of the lexical diversity indices predicting EFL reading difficulty

From: Predicting the difficulty of EFL reading comprehension tests based on linguistic indices

Variables	Β	r	t	p	R	R²	ΔF	Sig.
(Constant)	–	–	0.199	0.843	0.286	0.082	0.831	0.551
Volume	0.169	0.188	0.981	0.331
Abundance	− 0.015	0.104	− 0.092	0.927
HD-D	0.170	0.234	0.553	0.582
MATTR	0.068	0.238	0.185	0.854
MTLD-original	0.138	0.220	0.254	0.800
MTLD-w	− 0.162	0.215	− 0.309	0.758

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