# Biological Statistics #### Diversity Index

Measuring Diversity Assessment to test for the monitoring environmental change, damage or the success of conservation effects Extreme Environments Species ... #### Introduction to Biological Statistics

The statistical tests are not particularly challenging so don’t get too worried about the equations looking scary. There are 3 ... #### Standard Deviation

Find the mean (In this example it is 1+2+3+4+5/5 = 3) Find the total amount of data (In this example ... #### Standard Error

Standard error is a measurement which determines the accuracy of results according to 95% confidence. SD= standard Deviation n = ... #### T-test

Used for: To find the difference between 2 means The data is normally distributed x̄1 <= mean of the first ... #### Chi Squared Test

Chi Squared Test, tests for variance which is the difference between observed and expected numbers Structure O = Observed Number ... #### Spearmen Rank

Used for: A significant association between 2 sets of measurements from the same sample 5-30 pairs of measurementsMethod Create a ...