Table 3 Ranks and test statistics of Mann–Whitney U test for lexical density.

From: Lexical richness in Chinese university students’ EFL writing: a corpus-based comparison

Index

Group

N

(Mean) Mean rank

Mann–Whitney U

Z

Asymp. Sig. (2-tailed)

Effect size r

LD

EFL

400

(0.510) 294.66

37,663.50

−1.17

0.242

0.05

ENL

200

(0.514) 312.18

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