Median real estate property taxes paid for housing units with mortgages in 2013: $590 (1.2%). Median real estate property taxes paid for housing units with no mortgage in 2013: $637 (1.5%). Nearest city with pop. 50,000+: Bismarck, ND (78.6 miles, pop. 55,532). Nearest city with pop. 200,000+: Minneapolis, MN (305.7 miles, pop. 382,618).
The third type of variable is a controlled variable. This variable is constant in an experiment. Experiments are repeated a number of times to interpret how a change in the independent variable affects each trial result.
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.