What Does Positive Skew Mean In Psychology. As a general rule when data is skewed to the right positively skewed the mean will be greater than the median and when data is skewed to the left negatively skewed. Skewed distribution is a statistical term that measures asymmetry lack of similarity in a bell curve the bell-shaped graph that occurs when plotting data based on normal meaured traits.
The first distribution shown has a positive skew. For a unimodal distribution negative skew indicates that the tail on the left side of the probability density function is longer or fatter than the right side it does not distinguish these two kinds of shape. A distribution is skewed if one of its tails is longer than the other.
The coefficient of the skew is the measurement of the magnitude of the symmetry in the distribution of outcomes of a specific data set of occurrences.
Hence Mean Median. Data that is positively skewed has a long tail that extends to the right. Nov 28 2013 If the data is positively skewed then it will have a much longer right tail than the left tail. In this case mean and median will be greater than mode.
