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Is the regression equation a mathematical equation that defines the relationship between two variables?
Wiki User
∙ 12y ago
No.
It is an estimated equation that defines the best linear relationship between two variables (or their transforms).
If the two variables, x and y were the coordinates of a circle, for example, any method for calculating the regression equation would fail hopelessly.
Wiki User
∙ 12y ago
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What is regression coefficient and correlation coefficient?
The strength of the linear relationship between the two variables in the regression equation is the correlation coefficient, r, and is always a value between -1 and 1, inclusive. The regression coefficient is the slope of the line of the regression equation.
What equation represents a function?
A function tries to define these relationsips. It tries to give the relationship a mathematical form. An equation is a mathematical way of looking at the relationship between concepts or items. These concepts or items ar represented by what are called variables.
What equation represent functions?
A function tries to define these relationsips. It tries to give the relationship a mathematical form. An equation is a mathematical way of looking at the relationship between concepts or items. These concepts or items ar represented by what are called variables.
When a pair of variables have a positive correlation will the slope in the regression equation always be positive?
Yes
What is the mathematical term meaning an equation that shows a mathematical relationship?
if it has an equal sign then it is an equation
What is regression coefficient and correlation coefficient?
The strength of the linear relationship between the two variables in the regression equation is the correlation coefficient, r, and is always a value between -1 and 1, inclusive. The regression coefficient is the slope of the line of the regression equation.
Regression analysis is a statistical procedure for developing a mathematical equation that describes how?
one dependent and one or more independent variables are related.
What equation represents a function?
A function tries to define these relationsips. It tries to give the relationship a mathematical form. An equation is a mathematical way of looking at the relationship between concepts or items. These concepts or items ar represented by what are called variables.
What equation represent functions?
A function tries to define these relationsips. It tries to give the relationship a mathematical form. An equation is a mathematical way of looking at the relationship between concepts or items. These concepts or items ar represented by what are called variables.
When a pair of variables have a positive correlation will the slope in the regression equation always be positive?
Yes
What is the mathematical term meaning an equation that shows a mathematical relationship?
if it has an equal sign then it is an equation
When looking for a mathematical relationship between two variables use what kind of graph?
A straight line equation graph which is normally plotted on the Cartesian plane
What describes a relationship between several variables in an algebraic equation?
an algebraic equation that describes a relationship between several variables is called a?
What characteristic makes regression line of best fit?
The equation of the regression line is calculated so as to minimise the sum of the squares of the vertical distances between the observations and the line. The regression line represents the relationship between the variables if (and only if) that relationship is linear. The equation of this line ensures that the overall discrepancy between the actual observations and the predictions from the regression are minimised and, in that respect, the line is the best that can be fitted to the data set. Other criteria for measuring the overall discrepancy will result in different lines of best fit.
What is multi collinearity?
Multicollinearity is the condition occurring when two or more of the independent variables in a regression equation are correlated.
Why was there a need to invent linear equation in two variables?
If two variables are related, then the simplest relationship between them is a linear one. The linear equation expresses such a relationship.If two variables are related, then the simplest relationship between them is a linear one. The linear equation expresses such a relationship.If two variables are related, then the simplest relationship between them is a linear one. The linear equation expresses such a relationship.If two variables are related, then the simplest relationship between them is a linear one. The linear equation expresses such a relationship.
What is s solving an equation?
An equation is a mathematical statement that may (or may not) be true, defined for some variables. Solving an equation is finding those values of the variables for which the equation or statement is true.
