Calculate the mean (average) of any data set. Free online mean calculator with step-by-step explanation.
Calculate the arithmetic mean (average) of a data set.
The Mean Calculator computes the arithmetic mean (average) of your data set. The mean is the most commonly used measure of central tendency, calculated by summing all values and dividing by the count.
Data: 10, 20, 30, 40, 50 → Mean = 150/5 = 30
Related: Median Calculator, Mode Calculator
Mean = Sum of all values ÷ Count of values. Example: (10+20+30+40+50) ÷ 5 = 150 ÷ 5 = 30. Also called arithmetic average. Weighted mean uses multipliers for each value.
Mean and average are the same for arithmetic mean. But 'average' can also refer to median or mode. Mean is specifically the sum divided by count. Use 'mean' in statistics for clarity.
Mean for symmetric data without outliers. Median for skewed data or with outliers (income, house prices). Mean of 10,20,30,40,100 = 40, but median = 30 better represents typical value.