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.
Correlation is a term that refers to the strength of a relationship between two variables. Correlation and regression analysis are related in the sense that both deal with relationships among variables. The correlation coefficient is a measure of linear association between two variables. Values of the correlation coefficient are always between -1 and +1. The value of -1 represents a perfect negative correlation while a value of +1 represents a perfect positive correlation.