# How to Estimate Standard Deviations (SD) - range rule of thumb statistics

## range rule of thumb statistics - Range Rule of Thumb Calculator | Calculate Standard Deviation Oct 10, 2017 · Range >. The range rule of thumb is a handy method of estimating the range from the standard deviation.It tells us that the range is generally about four times the standard deviation.. So if your standard deviation is 2, you might guess that your range is about eight. Using the range rule of thumb it is also possible to estimate a standard deviation when you know the range. Simply. The Range Rule of Thumb says that the range is about four times the standard deviation. The standard deviation is another measure of spread in statistics. It tells you how your data is clustered around the mean. These values have mean of 17. we first calculate the range of our data as 25 - 12 = 13. Range Rule of Thumb Calculator. Online probability calculator which calculates the maximum, minimum, range and standard deviation values using range rule of thumb method. Jul 14, 2019 · The range rule tells us that the standard deviation of a sample is approximately equal to one-fourth of the range of the data. In other words s = (Maximum – Minimum)/4.This is a very straightforward formula to use, and should only be used as a very rough estimate of . The Statistics range rule of thumb is used to decide if a value is unusual. The easy way for me to remember the rule of thumb formula is by the distance. If the distance is greater than or equal to 2 standard deviations away from the mean the event is unusual.. If a number seems high or low do the test if it is a discrete probability distributions or binomial probability distributions problem. How to Find Standard Deviation Using Range Rule of Thumb - Definition, Formula, Example Definition: Range is the simplest measure of variation, and it is the difference between high and low values. 