Table 5

Descriptive statistics for each of the performed readability tests

Statistics
	FRES	FKGL	GFI	SMOG	ARI	CLI	RGL
N
Valid	21	21	21	21	21	21	21
Missing	0	0	0	0	0	0	0
Mean	52.5533	7.8729	8.6095	7.0257	6.3824	13.9690	8.6667
Median	56.2000	7.2000	8.0000	6.7000	5.4000	12.8000	8.0000
Mode	56.20	6.80	7.50*	6.20	4.50*	12.20*	8.00
SD	15.42517	2.03693	2.48855	1.84024	2.82765	3.01623	1.82574
Skewness	−0.960	0.935	−0.371	2.027	2.039	1.490	0.440
SE of skewness	0.501	0.501	0.501	0.501	0.501	0.501	0.501

*Multiple modes exist. The smallest value is shown.
ARI, Automated Readability Index; CLI, Coleman-Liau Index; FKGL, Flesch-Kincaid Reading Grade Level; FRES, Flesch Reading Ease Score; GFI, Gunning Fog Index; SMOG, Simple Measure of Gobbledygook.