Faecal coliform is as an important indicator of water pollution. It represents the microorganisms present in the water due to the presence of faecal material of human and animals.
Biochemical Oxygen Demand (BOD) has been identified as an indicator of water pollution in the previous article. A level higher than 3mg/L is not suitable for drinking.
The test found the presence of correlation, with most significant independent variables being education and promotion of illegal activities. Now, the next step is to perform a regression test.
Sample size calculation is the process used by social science researchers that helps to access the number of people needed to gather information from the people or collected data.
In statistics, Generalized Least Squares (GLS) is one of the most popular methods for estimating unknown coefficients of a linear regression model when the independent variable is correlating with the residuals.