What is gastroparesis? Gastroparesis, also called delayed gastric emptying, is a disorder that slows or stops the movement of food from the stomach to the small intestine. Normally, the muscles of the stomach, which are controlled by the vagus nerve, contract to break up food and move it through the gastrointestinal (GI) tract.
A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled. The independent variable is the one that is changed by the scientist. To ensure a fair test, a good experiment has only one independent variable. As the scientist changes the independent variable, he or she observes what happens. The scientist focuses his or her observations on the dependent variable to see how it responds to the change made to the independent variable.
In calculus, a function is typically graphed with the horizontal axis representing the independent variable and the vertical axis representing the dependent variable. In this function, y is the dependent variable and x is the independent variable.Variable used in an experiment or modelling can be divided into three types:  dependent variable ,  independent variable , or other.The dependent variable represents the output or effect, or is tested to see if it is the effect.The independent variable represents the input or cause, or is tested to see if it is the cause. Other variables may also be observed for various reasons.he term is known as the error and contains the variability of the dependent variable not explained by the independent variable. With multiple independent variables, the expression is: , where n is the number of independent variables.