Linear Regressions

Front

What is the formula for linear regression?

Back

y = mx + b, where y is the dependent variable, m is the slope, x is the independent variable, and b is the y-intercept.

Front

What does a positive correlation indicate in a scatterplot?

Back

A positive correlation indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative correlation indicate in a scatterplot?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

What does a correlation coefficient of 0 indicate?

Back

A correlation coefficient of 0 indicates no correlation between the two variables.

Front

What is causation?

Back

Causation refers to a relationship where one event causes another event to occur.

Front

What is correlation?

Back

Correlation is a statistical measure that describes the extent to which two variables change together.

Front

What is the difference between correlation and causation?

Back

Correlation does not imply causation; just because two variables are correlated does not mean one causes the other.

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two quantitative variables.

Front

What does a strong correlation look like on a scatterplot?

Back

A strong correlation appears as points that are closely clustered around a straight line.

Front

What does a weak correlation look like on a scatterplot?

Back

A weak correlation appears as points that are more spread out and do not closely follow a straight line.