Average refers to which statistical measure?

• A. Median
• B. Mode
• C. Range
• D. Mean equals the sum of a group of numbers divided by the number of units

Answer: (D)

Average is a measure of central tendency that specifically refers to the arithmetic mean. It’s found by adding all the numbers in a data set and then dividing by how many numbers there are. This creates a single representative value that reflects the overall level of the data. The other measures serve different purposes: the median is the middle value when the data are ordered, the mode is the most frequently occurring value, and the range is the difference between the largest and smallest values. For example, with 2, 3, 5, 7, the average is (2 + 3 + 5 + 7) ÷ 4 = 4.25. The median would be between 3 and 5, the mode would occur if a value repeats, and the range would be 7 − 2 = 5.