Statistics and probability
Weighted mean
A mean in which values contribute in proportion to assigned weights.
Common notationx̄_w=Σwᵢxᵢ/Σwᵢ
In one sentence
What does Weighted mean mean?
A mean in which values contribute in proportion to assigned weights.
How it is written
x̄_w=Σwᵢxᵢ/Σwᵢ
A compact example
Scores 80 and 90 weighted 1 and 3 have weighted mean 87.5.
Other names and search terms
weighted average.
Where this fits
When should you learn Weighted 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 Weighted mean
What does Weighted mean mean in mathematics?
A mean in which values contribute in proportion to assigned weights.
How is Weighted mean written?
A common notation is x̄_w=Σwᵢxᵢ/Σwᵢ.
What is an example of Weighted mean?
Scores 80 and 90 weighted 1 and 3 have weighted mean 87.5.