To calculate the range:

1. Identify the largest value (max) and the smallest value (min) in the dataset.
2. Subtract the smallest value (min) from the largest value (max).

Let's calculate the range of the following dataset: 5, 10, 15, 20, 25.

1. The largest value (max) is 25, and the smallest value (min) is 5.
2. Subtract the smallest value (5) from the largest value (25): 25 - 5 = 20.

So, the range of the dataset {5, 10, 15, 20, 25} is 20.

The range can provide a quick understanding of the spread of the data, but it is sensitive to outliers. If there are extreme values in the dataset, they can greatly influence the range value. Therefore, it is often recommended to consider other measures of dispersion, such as the standard deviation or interquartile range, for a more robust analysis of data variability.