TY  - JOUR
AU  - Martinez-Pons, Manuel 
PY  - 2013
TI  - A COEFFICIENT OF VARIABILITY
JF  - Journal of Mathematics and Statistics
VL  - 9
IS  - 1
DO  - 10.3844/jmssp.2013.62.64
UR  - https://thescipub.com/abstract/jmssp.2013.62.64
AB  - A coefficient of variability is described. It is shown that conducting all possible paired comparisons in a group of scores, the investigator can ascertain the group’s degree of variability as well as its converse, the group’s degree of homogeneity. The coefficient, useful in determining whether to divide a class into subgroups for the purpose of instruction, has the advantage that it is in the form of a proportion and that it thus provides a common ground for comparison of variability across measures.