what is range
http://www.purplemath.com/modules/meanmode.htm
When you take the maximum (highest number in a set of data) and the minimum (lowest number) and subtract them.
Range is a statistical term that refers to the difference between the highest and lowest values in a dataset. It gives an indication of the spread or variability of the data. To calculate the range, follow these steps:
1. Arrange the dataset in ascending or descending order.
2. Identify the highest value (the maximum) and the lowest value (the minimum).
3. Subtract the lowest value from the highest value.
For example, let's say we have a data set of test scores: 78, 85, 92, 68, 80. To find the range:
1. Arrange the numbers in ascending order: 68, 78, 80, 85, 92.
2. The highest value is 92 and the lowest value is 68.
3. Subtract the lowest value from the highest value: 92 - 68 = 24.
Therefore, the range of this dataset is 24. It means the scores range from a minimum of 68 to a maximum of 92.