➗ Mean Calculator
Paste your dataset, clean invalid entries with one click, and instantly compute the arithmetic mean. Helpful secondary outputs include the data count, sum, and optional trimming to exclude outliers before averaging.
Dataset Input
Accepts comma, space, newline, or tab separated numbers
Tip: paste from spreadsheets or CSV files. Non-numeric characters are flagged.
Mean & Supporting Metrics
Arithmetic Mean
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Sum
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Count
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Trimmed Mean (5%)
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Drops top & bottom 5% of values when possible.
Value Quality Checks
- No values analysed yet.
How to Use
- Paste or type your numbers into the input box. Any separator (comma, space, newline, or tab) works.
- Click Calculate Mean to see the mean, sum, and count. Invalid tokens are ignored automatically.
- Use Remove Invalid Entries if you want the input box cleaned of non-numeric values before recalculating.
- Review the trimmed mean and insights section to detect potential outliers or data-entry issues.
- Reset when starting a new dataset to avoid carrying over previous values.
Formula Reference
Arithmetic mean \( \bar{x} = \frac{1}{n} \sum_{i=1}^{n} x_i \) where \( n \) is the number of observations. Common references include Montgomery & Runger (2014) Applied Statistics and Probability for Engineers.