How to Calculate Standard Deviation using Thumb Rule

A simple ShortTutorial on How to Find Standard Deviation Using thumb Rule with a brief explanation of formula and example.

How to Find Standard Deviation of Thumb Rule

Rule of thumb is a method of procedure or principle that is based on the experience and practical application but not the theory or scientific results. It is one of the easiest procedure used for recalling certain value or making any determination. Here is a simple online tutorial on "How to Calculate Standard Deviation using Thumb Rule" to calculate the maximum, minimum, range and standard deviation values using the rule of thumb method.

Standard Deviation Formula
s = R / 4
S - Standard Deviation
R - Range
R = Maximum - Minimum

Example on How to Find Standard Deviation of Thumb Rule
Step 1: Lets find the minimum, maximum and range for the set of values given below using the rule of thumb method.
{4, 9, 3, 6, 2, 5}

Step 2: Substitute the given values using the formula.
From the given data {4, 9, 3, 6, 2, 5}
Maximum - 9
Minimum - 2
R = Maximum - Minimum
= 9 - 2 = 7
Range = 7
Step 3: Find the standard deviation.
s = R / 4
= 7/4 = 1.75
Standard Deviation = 1.75

You can also use our online Range Rule of Thumb Calculator to find the Range and Standard Deviation for any set of data values.

Related Topics