Linear and Quadratic Regression

Front

What is Linear Regression?

Back

A statistical method used to model the relationship between a dependent variable and one or more independent variables by fitting a linear equation to observed data.

Front

What is Quadratic Regression?

Back

A type of regression analysis used to model the relationship between a dependent variable and an independent variable by fitting a quadratic equation to the data.

Front

What does the term 'Curve of Best Fit' mean?

Back

The curve that best represents the data points in a scatter plot, minimizing the distance between the data points and the curve.

Front

What is a Scatter Plot?

Back

A graphical representation of two variables where each point represents an observation in the dataset.

Front

What is the y-intercept in a linear equation?

Back

The value of y when x is 0; it represents the point where the line crosses the y-axis.

Front

What is the slope of a line?

Back

The measure of the steepness or incline of the line, indicating the rate of change of the dependent variable with respect to the independent variable.

Front

What does a positive relationship in a scatter plot indicate?

Back

As one variable increases, the other variable also tends to increase.

Front

What does a negative relationship in a scatter plot indicate?

Back

As one variable increases, the other variable tends to decrease.

Front

What is the purpose of calculating the line of best fit?

Back

To provide a predictive model that can be used to estimate values of the dependent variable based on the independent variable.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other.