Entomology for beginners. Entomology is the study of insects. This page provides some basic information on insects. First we look at the anatomy of adult insects, and then we will see a short story about the metamorphosis of insects. Insect anatomy.
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 â Minimum)/4. This is a very straightforward formula to use, and should only be used as a very rough estimate of the standard deviation.
The standard deviation of a sample is known as S and is calculated using: Where x represents each value in the population, x is the mean value of the sample, Ï is the summation (or total), and n-1 is the number of values in the sample minus 1.