A negatively skewed distribution is where most of the values are on the higher side and the tail is pointing left. The mean of a distribution is more affected by extreme values than is the median. Therefore, in a negatively skewed distribution with few values on the lower end of the distribution, the mean is pulled towards the tail or lower end and becomes less than the median. Ref: Park's Textbook Of Preventive And Social Medicine, By K. Park, 19th Edition, Pages 699-702; Essentials of Research Methods in Health, Physical Education, Exercise Science and Recreation, By Kris E. Berg, Richard W. Latin, Second Edition, Pages 85-87; High-Yield Biostatistics, By Anthony N. Glaser, Third Edition, Pages 10, 11.