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In a mathematical relationship, the independent variable is the variable that can be changed or controlled in order to determine the effect on another variable. On the other hand, the dependent variable is the variable that will change in response to changes in the independent variable.
For example, in the equation of a straight line, y = mx + b, x represents the independent variable because it is usually used as the input, and y represents the dependent variable because it depends on the value of x.
In a real-life situation, a study aimed at exploring the relationship between total daily exercise time and weight loss could use exercise time as the independent variable and weight loss as the dependent variable, since weight loss would depend on how much exercise is done daily.
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Identifying Independent and Dependent Variables
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