A researcher wants to investigate the relationship between schooling (years of education) and wages (1000 USD). The aim is to find out the "return to education". To be able to investigate this, the researcher collects data among workers and decides to conduct a regression analysis. Additional independent variables are years of working experience ("Experience"), years of working experience-squared ("Experience-sq"), and a dummy variable for the race (if the worker is "Hispanic" then the dummy takes value 1 otherwise 0). She obtains the following regression results. Regression Statistics Multiple R 0.490 R Square A Adjusted R Square 0.234 Standard Error 0.256 Observations 496.000 ANOVA df S MS Significance F Regression 4.000 10.170 2.543 в 0.000 Residual 491.000 32.126 0.065 Total 495.000 42.296 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept -0.632 0.110 -5.751 0.000 -0.847 -0.416 Schooling 0.065 0.006 0.000 D E Race dummy -0.073 0.042 -1.741 0.082 -0.155 0.009 Experience 0.063 0.012 5.463 0.000 0.041 0.086 Experience-sq -0.002 0.001 -2.829 0.005 -0.003 -0.001
Family of Curves
A family of curves is a group of curves that are each described by a parametrization in which one or more variables are parameters. In general, the parameters have more complexity on the assembly of the curve than an ordinary linear transformation. These families appear commonly in the solution of differential equations. When a constant of integration is added, it is normally modified algebraically until it no longer replicates a plain linear transformation. The order of a differential equation depends on how many uncertain variables appear in the corresponding curve. The order of the differential equation acquired is two if two unknown variables exist in an equation belonging to this family.
XZ Plane
In order to understand XZ plane, it's helpful to understand two-dimensional and three-dimensional spaces. To plot a point on a plane, two numbers are needed, and these two numbers in the plane can be represented as an ordered pair (a,b) where a and b are real numbers and a is the horizontal coordinate and b is the vertical coordinate. This type of plane is called two-dimensional and it contains two perpendicular axes, the horizontal axis, and the vertical axis.
Euclidean Geometry
Geometry is the branch of mathematics that deals with flat surfaces like lines, angles, points, two-dimensional figures, etc. In Euclidean geometry, one studies the geometrical shapes that rely on different theorems and axioms. This (pure mathematics) geometry was introduced by the Greek mathematician Euclid, and that is why it is called Euclidean geometry. Euclid explained this in his book named 'elements'. Euclid's method in Euclidean geometry involves handling a small group of innately captivate axioms and incorporating many of these other propositions. The elements written by Euclid are the fundamentals for the study of geometry from a modern mathematical perspective. Elements comprise Euclidean theories, postulates, axioms, construction, and mathematical proofs of propositions.
Lines and Angles
In a two-dimensional plane, a line is simply a figure that joins two points. Usually, lines are used for presenting objects that are straight in shape and have minimal depth or width.
What is C,D and E? And how do i calculate it??
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 4 images
