Allan Ray is helped off the court. Villanova basketball star Allan Ray had his eyeball literally poked out of its socket by an opposing player in a recent game. Ray has been treating the injury with eye drops, and he planned to meet with doctors to find out if he can play in the first round of the NCAA tournament.
Fulcrum(noun) a prop or support. Fulcrum(noun) that by which a lever is sustained, or about which it turns in lifting or moving a body. Fulcrum(noun) an accessory organ such as a tendril, stipule, spine, and the like. Fulcrum(noun) the horny inferior surface of the lingua of certain insects.
each box represents the deviation from the mean. The sum of negative deviations from the mean is equal to the sum of positive deviations from the mean. Thus, the mean acts as a balancing point in the distribution. Presenting the mean as a fulcrum allows students to visualize the location of the mean relative to all of the scores in the distribution. measure of central tendency because it is the single value that is common to all scores. The etymology of mean and sum illustrates this point well. summa, which refers to the whole or the total of the parts (Partridge 1977).