Final answer:
The measure of central tendency where the sum of a set of scores in a distribution is divided by the number of scores is called the mean or average.
Step-by-step explanation:
The measure of central tendency that is the sum of a set of scores in a distribution divided by the number of scores is called the mean or average. It is a number that measures the central tendency or the average value of a set of data points.
To calculate the mean, you add up all the scores in the set and then divide the total by the number of scores. For example, if you have a set of scores {2, 4, 6, 8, 10}, the mean would be (2+4+6+8+10)/5 = 6.
The mean is commonly used as a measure of central tendency because it takes into account all the values in the data set and provides a representative value for the entire set.