This is a very important number for us. You can see that the variance is nothing more than the average squared deviation of scores in a distribution about the mean of the distribution. When describing data, the variance is typically not the preferred measure of variability. Its formula is Shape Symmetry. In addition to reporting central tendency and variability, it is important to report skew.
Negative values indicate that the left tail is longer than the right.
Positive skew means the opposite. With positive skew the mean will be larger than the median. With negative skew the opposite is true. This value represents a mesokurtic distribution. When kurtosis is less than 3 the distribution is described as plattykurtic.