Figure 5.9: Percentage correct score of syntactic awareness (difficult reading passage) with a positive skew

The variable ‘corrd’, percentage correct in difficult reading passage, has a typical positive skew with the tail of the distribution extended to the right (hence +ve), and the majority of values to the left (see the histogram and stem and leaf plots) Also notice the positive

kurtosis (too few values under one tail of the distribution) and the relative positioning of the mean, median and mode, i.e., mode<median<mean (see Chapter 3, Describing Distributions).