Fish Food. Fish love to gobble down leeches. A healthy fish population will, in most cases, keep leech numbers under control. Among game and lake fish, red ear sunfish do a great job of eating these worms. Other natural leech predators include turtles, crayfish and water fowl. Prevention, Removal
This literally means from after the fact. The term. is used to identify that the research has been conducted after the phenomenon of interest. has occurred naturally. The main purpose of a correlational study is to determine. relationships between variables, and if a relationship exists, to determine a regression. equation that could be used make predictions to a population. In bivariate correlational. studies, the relationship between two variables is measured.
Share this page on your website: A correlational study determines whether or not two variables are correlated. This means to study whether an increase or decrease in one variable corresponds to an increase or decrease in the other variable. Negative correlation: Negative correlation is when an increase in one variable leads to a decrease in another and vice versa. 2  For example, the level of education might correlate negatively with crime.