A Joint Probability Distribution for Discrete Random Variables X and Y

question 53

Multiple Choice

A joint probability distribution for discrete random variables X and Y is denoted by ________.

• A)P(X_i,Y_i)= Xi × Yi
• B)P(X = x,Y = y)= f(x,y)
• C)P(X > Y)= f(x,y)
• D)P(j(x),j(y))

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Definitions:

Slope

A measure of the steepness or incline of a line, often represented as the ratio of the change in the y-value over the change in the x-value between two points on the line.

True Regression Line

The exact linear relationship between the independent and dependent variables in a population.

Equation

A mathematical statement that asserts the equality of two expressions, typically shown by the use of an equals sign.

Simple Linear Regression Model

A statistical model that describes the linear relationship between a single independent variable and a dependent variable using a straight line.