Calculate Uncertainty with Lower and Upper Limits
Uncertainty with lower and upper limits is a crucial concept in science, engineering, and data analysis. It helps us understand the range within which a measured value is likely to fall. This calculator helps you determine these limits and provides a visual representation using a chart.
- Enter a value in the input field.
- Select the desired uncertainty level from the dropdown menu.
- Click the ‘Calculate’ button.
The formula used to calculate uncertainty with lower and upper limits is:
Upper Limit = Value + (Uncertainty * Value)
Lower Limit = Value - (Uncertainty * Value)
| Value | Uncertainty (0.01) | Uncertainty (0.02) | Uncertainty (0.05) | Uncertainty (0.1) |
|---|---|---|---|---|
| 100 | 10.01 – 99.99 | 98.00 – 102.00 | 90.00 – 110.00 | 80.00 – 120.00 |
| 500 | 499.50 – 500.50 | 490.00 – 510.00 | 425.00 – 575.00 | 350.00 – 650.00 |
- Always use the appropriate uncertainty level based on your measurement method.
- Consider the source of uncertainty when interpreting the results.
- Remember that these limits represent a confidence interval, not an absolute range.
What if my uncertainty level is not listed in the dropdown?
You can calculate the uncertainty manually using the formula provided in Module C.
Why is the chart showing a range instead of a single value?
The chart represents the uncertainty by showing the range within which the measured value is likely to fall.
Learn more about uncertainty from the U.S. National Institute of Standards and Technology
Explore uncertainty in measurements at the University of Example