Calculadora de Amplitude
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
A = máx − mín
About this calculator
The Amplitude Calculator is a simple statistical tool that determines the spread of a data set. The range is the difference between the maximum and minimum values, providing a quick measure of variability. For example, in a list of ages from 20 to 60, the range is 40. This metric is useful for an initial understanding of data distribution.
The calculation is straightforward: identify the maximum and minimum values in the set and subtract the minimum from the maximum. The formula is A = max − min. Although simple, the range is sensitive to outliers, as it depends only on the extremes. Therefore, it should be used with caution in deeper analyses.
You can use this calculator in everyday situations, such as checking temperature variation over a week, the price difference of a product across stores, or the spread of exam scores. It is a quick tool for preliminary comparison of data sets.
Cautions: the range does not consider the internal distribution of data. Two sets can have the same range but very different distributions. Additionally, outliers can distort the result. For more robust analyses, combine the range with other measures like standard deviation or quartiles.
Frequently asked questions
Can the range be negative?
No, the range is always non-negative, as it is the difference between the maximum and minimum. If all values are equal, the range is zero.
What is the difference between range and standard deviation?
The range only considers the extreme values, while standard deviation measures the spread of all data around the mean. Standard deviation is more robust and less sensitive to outliers.
Is the range affected by outliers?
Yes, the range is highly sensitive to outliers, as it depends only on the largest and smallest values. A single extreme value can dramatically increase the range.
How to calculate the range for grouped data?
For data grouped into classes, the range is the difference between the upper limit of the last class and the lower limit of the first class.
When should I use the range?
Use the range for a quick check of variability, especially in small datasets without outliers. For more detailed analysis, prefer other measures.