estimate
Estimates the sample standard deviation from the range. Wan, Xiang, Wenqian Wang, Jiming Liu, and Tiejun Tong. “Estimating the Sample Mean and Standard Deviation from the Sample Size, Median, Range and/or Interquartile Range.” BMC Medical Research Methodology 14, no. 1 (December 2014): 135. https://doi.org/10.1186/1471-2288-14-135.