All of the statements that are mentioned namely the mean is larger than the median and the tail of the distribution is to the right are connected to the +2.48. Take note that this is a positively skewed distribution based on the number as it is in between -3 and +3 but is closer to +3.
This type of graph shows that there may be more low scores as compared to high scores. This is because the mean is higher than the median and the mode. Negatively skewed graphs indicate higher scores of students. Do remember that the median is always greater than the mode.
In a positively skewed distribution, the mean is greater than the median or mode. The coefficient of skewness (Sk) generally lies between -3 and +3, therefore an Sk of +2.48 indicates significant positive skewness.
