Chapter 1 the study of collocations

4.1.1.3  Descriptive Statistics for Group 3   
 
The analysis of the data for Group 3 again reveal normal distributions 
for the majority of the dependent variables: Holistic Rating (Kurtosis: -.855, 
Skewness: -.3), Lexical Density (Kurtosis: .204, Skewness: .129), Words per T-
Unit (Kurtosis: -.042, Skewness: .354), and S-Nodes per T-Unit (Kurtosis: .394, 
Skewness: .519).  The results of the analysis for the dependent variable Target-
Like Use of Articles show a peaked and negatively skewed distribution 
(Kurtosis: 2.986, Skewness: -1.815), while the results of the analysis for the 
dependent variable Error-Free T-Units show a distribution that is peaked and 
positively skewed (Kurtosis: 3.372, Skewness: 1.569).   
 
Despite the fact that some variables in each group displayed slightly 
peaked or skewed distributions, overall the distribution of the data from the 
analyses of the language proficiency measures was found to be normal.  For a 
summary of the results on the frequency distributions of the language 
proficiency measures see Table 11 below.