Regression and Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

Front

What does a positive slope indicate in a graph?

Back

A positive slope indicates that as one variable increases, the other variable also increases.

Front

What does a negative slope indicate in a graph?

Back

A negative slope indicates that as one variable increases, the other variable decreases.

Front

What does a slope of zero indicate?

Back

A slope of zero indicates that there is no change in the y-value as the x-value changes, resulting in a horizontal line.

Front

What does an undefined slope indicate?

Back

An undefined slope indicates a vertical line where the x-value does not change, leading to no defined slope.

Front

What is correlation in statistics?

Back

Correlation measures the strength and direction of a linear relationship between two variables.

Front

What is a strong positive correlation?

Back

A strong positive correlation means that as one variable increases, the other variable tends to increase significantly.

Front

What is a strong negative correlation?

Back

A strong negative correlation means that as one variable increases, the other variable tends to decrease significantly.

Front

What is a weak positive correlation?

Back

A weak positive correlation indicates a slight tendency for one variable to increase as the other increases, but the relationship is not strong.

Front

What is a weak negative correlation?

Back

A weak negative correlation indicates a slight tendency for one variable to decrease as the other increases, but the relationship is not strong.