What are the measures of central tendency?

Three most common measures of central tendency: the mean, the median, and the mode. Arithmetic Mean: The arithmetic mean is the most common measure of central tendency. It is simply the sum of the numbers divided by the number of numbers. The symbol "M" is used for the mean of a sample. Median: The median is also a frequently used measure of central tendency. The median is the midpoint of a distribution. Computation of the Median: When there is an odd number of numbers, the median is simply the middle number. For example, the median of 2, 4, and 7 is 4. When there is an even number of numbers, the median is the mean of the two middle numbers. Thus, the median of the numbers 2, 4, 7, 12 is (4+7)/2 = 5.5. When there are numbers with the same values, then the formula for the third definition of the 50th percentile should be used. Mode: The mode is the most frequently occurring value. read less