Average Calculator
Average Calculator
Compute arithmetic or weighted mean with instant stats.
InputsValues list5 valuesLive
Input helpersPresets and CSV
Arithmetic mean
60
5/5 used • Sum 300
sum(values) ÷ count
Trend
10200
60
Used 5/5 values • Sum 300
5/5
Used
0
Outlier
190
Range
Data inspection
Outlier review
- 10Used
- 20Used
- 30Used
- 40Used
- 200Used
Outlier fences: -142.5 to 277.5
Values used for mean: 10, 20, 30, 40, 200
10
Min
30
Median
None
Mode
Formula
Arithmetic mean = sum(values)/n; weighted mean = sum(value x weight)/sum(weights) \bar{x}_w = \frac{\sum (x_i w_i)}{\sum w_i} - Use arithmetic mode for equal-weight values and weighted mode when each value has a different importance.
- Optional outlier mode uses IQR fences to exclude extreme values in arithmetic mode.
- Import CSV data to populate values quickly for either arithmetic or weighted workflows.
- Review median/mode alongside average to validate skewed datasets.
Example
Worked example: weighted rows 85,0.3; 90,0.4; 78,0.3
- 1 Weighted sum = (85x0.3) + (90x0.4) + (78x0.3) = 84.9
- 2 Total weight = 1.0
- 3 Weighted mean = 84.9 / 1.0 = 84.9
The weighted average is 84.9.
How
- Choose arithmetic or weighted mode.
- Enter values (or value,weight rows) manually, or import from CSV.
- Enable outlier exclusion in arithmetic mode when needed.
- Read live average output and verify median/mode cards before copying summary.
Avoid
- Including non-numeric symbols in the list.
- Confusing arithmetic mean and weighted mean modes.
- Assuming outlier exclusion applies in weighted mode.
- Forgetting that median/mode can better represent skewed datasets.
FAQ
Can I import CSV files?
Yes. CSV import supports numeric values in arithmetic mode and value,weight rows in weighted mode.
What does outlier mode do?
Outlier exclusion uses IQR fences in arithmetic mode and removes values outside the lower/upper fence before computing mean.
How is weighted mean calculated here?
Weighted mode computes sum(value × weight) divided by total weight and shows normalized row weights.
Where can I compare median and mode directly?
This page shows median and mode cards and links to dedicated median and mode calculators for deeper analysis.
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