Moreover, a model has been developed to interpret the correlation between the GA-coating weight of the PHS and the penetration depth based on the heat input per unit thickness of the sheet.
This should be kept in mind when interpreting the correlations between TOPIK scores and indicators of academic success obtained in the present study.
We used the following criteria to interpret the magnitude of the correlation coefficients: <0.25 indicating low correlations, 0.25 to 0.5 indicating fair correlations, 0.5 to 0.75 indicating moderate-to-good correlations, and >0.75 indicating good-to-excellent correlations [ 37].
The value of correlation coefficient obtained in the analysis of Spearman rank-order correlation coefficient (rho) is 0.82 which according to the guidelines proposed by Cohen (1988) to interpret the values of correlation coefficient suggests quite a strong relationship between knowledge of formulaic sequences and language proficiency.
Also, we interpret the lack of correlation between the SES and the "emotions" domain of the Laval Questionnaire as an indication that both questionnaire measure different constructs, rather than poor validity of either of the questionnaires.
As the number of subjects with MMN present was less, to interpret the results of correlation, a scatter plot was drawn between MMN peak latency and speech identification scores.
The following criteria were adopted to interpret the magnitude of the correlation (r) between the different measures: ≤0.1, trivial; 0.1 0.3, small; > 0.3 0.5, moderate; > 0.5 0.7, large; > 0.7 0.9, very large and >0.9 1.0, almost perfect.
To interpret the magnitude of the correlation coefficients ρ, the following guidelines from [28] were followed: for absolute values between 0 and 0.19 a very slight relationship, between 0.20 and 0.39 a slight one, between 0.40 and 0.59 moderate relationship, between 0.60 and 0.79 a strong one, and between 0.80 and 1 very strong.
Many background variables are correlated with one another, and therefore it is difficult to interpret the mass of correlations reported in Supplementary table 4 of Additional File 1, and described in the previous section.
