Statistics and probability
Mean
The arithmetic average found by adding values and dividing by the number of values.
Common notationx̄=Σxᵢ/n
In one sentence
What does Mean mean?
The arithmetic average found by adding values and dividing by the number of values.
How it is written
x̄=Σxᵢ/n
A compact example
The mean of 2, 4 and 9 is 15/3=5.
Other names and search terms
average, arithmetic mean.
Where this fits
When should you learn Mean?
The first encounter is not the final level. Many ideas begin visually, become computational in high school and become formal in college.
- 1Pre-high schoolPrepare foundations
- 2High schoolUsually introduced
- 3CollegeGreater depth
- 4AdvancedGreater depth
- Statistics
- Probability
- Fractions
- Percentages
- Sets
- Distributions
- Inference
- Quantum probability
Quantum predictions are expressed through probabilities and expected values.
Open the Zero-to-QM pathClear answers
Questions about Mean
What does Mean mean in mathematics?
The arithmetic average found by adding values and dividing by the number of values.
How is Mean written?
A common notation is x̄=Σxᵢ/n.
What is an example of Mean?
The mean of 2, 4 and 9 is 15/3=5.