enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Dependent and independent variables - Wikipedia

   en.wikipedia.org/wiki/Dependent_and_independent...

   A variable is considered dependent if it depends on an independent variable. Dependent variables are studied under the supposition or demand that they depend, by some law or rule (e.g., by a mathematical function), on the values of other variables. Independent variables, in turn, are not seen as depending on any other variable in the scope of ...

3. Bivariate analysis - Wikipedia

   en.wikipedia.org/wiki/Bivariate_analysis

   If the dependent variable is continuous—either interval level or ratio level, such as a temperature scale or an income scale—then simple regression can be used. If both variables are time series , a particular type of causality known as Granger causality can be tested for, and vector autoregression can be performed to examine the ...

4. Dynamic scaling - Wikipedia

   en.wikipedia.org/wiki/Dynamic_Scaling

   One way of verifying dynamic scaling is to plot dimensionless variables / as a function of / of the data extracted at various different time. Then if all the plots of f {\displaystyle f} vs x {\displaystyle x} obtained at different times collapse onto a single universal curve then it is said that the systems at different time are similar and it ...

5. Design of experiments - Wikipedia

   en.wikipedia.org/wiki/Design_of_experiments

   The change in one or more independent variables is generally hypothesized to result in a change in one or more dependent variables, also referred to as "output variables" or "response variables." The experimental design may also identify control variables that must be held constant to prevent external factors from affecting the results.

6. Experiment - Wikipedia

   en.wikipedia.org/wiki/Experiment

   The independent variable is manipulated by the experimenter, and the dependent variable is measured. The signifying characteristic of a true experiment is that it randomly allocates the subjects to neutralize experimenter bias , and ensures, over a large number of iterations of the experiment, that it controls for all confounding factors.

7. Coefficient of determination - Wikipedia

   en.wikipedia.org/wiki/Coefficient_of_determination

   Ordinary least squares regression of Okun's law.Since the regression line does not miss any of the points by very much, the R 2 of the regression is relatively high.. In statistics, the coefficient of determination, denoted R 2 or r 2 and pronounced "R squared", is the proportion of the variation in the dependent variable that is predictable from the independent variable(s).

8. Propagation of uncertainty - Wikipedia

   en.wikipedia.org/wiki/Propagation_of_uncertainty

   Any non-linear differentiable function, (,), of two variables, and , can be expanded as + +. If we take the variance on both sides and use the formula [11] for the variance of a linear combination of variables ⁡ (+) = ⁡ + ⁡ + ⁡ (,), then we obtain | | + | | +, where is the standard deviation of the function , is the standard deviation of , is the standard deviation of and = is the ...

9. Variable (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Variable_(mathematics)

   The property of a variable to be dependent or independent depends often of the point of view and is not intrinsic. For example, in the notation f(x, y, z), the three variables may be all independent and the notation represents a function of three variables. On the other hand, if y and z depend on x (are dependent variables) then the notation ...