The "H statistic" or H Stat (also called U statistic), a measure of response agreement that takes into consideration the proportion of subjects producing each alternative. where
pi = proportion of subjects producing the i-th name.
An increasing H value indicates decreasing name agreement, 0 refers to perfect name agreement (following Snodgrass and Vanderwart, 1980).
When calculating the proportion of subs, 100% = subject number.