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  2. Dependent and independent variables - Wikipedia

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

    In single variable calculus, a function is typically graphed with the horizontal axis representing the independent variable and the vertical axis representing the dependent variable. [4] In this function, y is the dependent variable and x is the independent variable.

  3. Scatter plot - Wikipedia

    en.wikipedia.org/wiki/Scatter_plot

    The measured or dependent variable is customarily plotted along the vertical axis. If no dependent variable exists, either type of variable can be plotted on either axis and a scatter plot will illustrate only the degree of correlation (not causation) between two variables. [citation needed]

  4. Economic graph - Wikipedia

    en.wikipedia.org/wiki/Economic_graph

    The IS curve moves to the right if spending plans at any potential interest rate go up, causing the new equilibrium to have higher interest rates (i) and expansion in the "real" economy (real GDP, or Y). In most mathematical contexts, the independent variable is placed on the horizontal axis and the dependent variable on the

  5. Plot (graphics) - Wikipedia

    en.wikipedia.org/wiki/Plot_(graphics)

    Scatterplot : A scatter graph or scatter plot is a type of display using variables for a set of data. The data is displayed as a collection of points, each having the value of one variable determining the position on the horizontal axis and the value of the other variable determining the position on the vertical axis. [9]

  6. 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 ...

  7. Cooling curve - Wikipedia

    en.wikipedia.org/wiki/Cooling_curve

    The independent variable (X-axis) is time and the dependent variable (Y-axis) is temperature. [1] Below is an example of a cooling curve used in castings. The initial point of the graph is the starting temperature of the matter, here noted as the "pouring temperature".

  8. Linear regression - Wikipedia

    en.wikipedia.org/wiki/Linear_regression

    In the formula above we consider n observations of one dependent variable and p independent variables. Thus, Y i is the i th observation of the dependent variable, X ij is i th observation of the j th independent variable, j = 1, 2, ..., p. The values β j represent parameters to be estimated, and ε i is the i th independent identically ...

  9. Projection matrix - Wikipedia

    en.wikipedia.org/wiki/Projection_matrix

    A matrix, has its column space depicted as the green line. The projection of some vector onto the column space of is the vector . From the figure, it is clear that the closest point from the vector onto the column space of , is , and is one where we can draw a line orthogonal to the column space of .