This page is tuned for clean geometry checks during drafting or homework around weighted mean.
Informational calculator only. Verify important outputs independently before legal, tax, medical, engineering, safety-critical, contractual, employment, or compliance use.
Enter job values, review the estimate, then use the decision hints before ordering or quoting.
weighted mean = sum(value x weight) / sum(weight)Weighted means let some observations count more than others in the final average.
The total weight must be non-zero.
Next: arithmetic mean of four values.
When you need quick formula verification before copying a result into notes around root mean square.
This page is tuned for clean geometry checks during drafting or homework around midrange.
Keep more decimals whenever this result will be reused in another formula, drawing step, or comparison instead of being rounded once at the end.