The range of numbers in GRE mathematics, range can be translated as range, also called full range, especially the gap between the maximum value and the minimum value.

The range of 5,7,8,9, 1 1 is 6, because the maximum value is 1 1 and the minimum value is 5, so the range is 1 1-5 = 6.

Range, range, is used to represent the number of variance in statistical data, that is, the data obtained by subtracting the minimum value from the maximum value. It is the maximum range of sign value change and the simplest index to measure sign change. The calculation method is the difference between the maximum value and the minimum value.

Extended data

Range, also known as range error or range, is expressed by R. R is used to represent the difference between the maximum value and the minimum value of the measure of variance in statistical data, that is, the data obtained by subtracting the minimum value from the maximum value.

It is the maximum range of sign value change and the simplest index to measure sign change. The moving range is one of them. Range can not be used for comparison, the unit is different, variance can be used for comparison, because it is all ratio.

Range n< doesn't make full use of data information, but the calculation is very simple, which is only suitable for small sample size (n