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.
If you were to calculate the standard deviation on the worksheet, without the STDEV.P function, hereâs how you would do it. 1  Find the average of the numbers in the pivot table data. 2  From each number, subtract the average. 3  Square the calculated difference for each number. 4  Find the average of the squared difference. 5  Find the square root of the average.