Types of Association

Front

What is a positive association in a graph?

Back

A positive association occurs when an increase in one variable corresponds to an increase in another variable, resulting in an upward trend in the graph.

Front

What is a negative association in a graph?

Back

A negative association occurs when an increase in one variable corresponds to a decrease in another variable, resulting in a downward trend in the graph.

Front

What does a scatterplot represent?

Back

A scatterplot represents the relationship between two quantitative variables, showing how one variable may change in relation to another.

Front

What is meant by 'no association' in a graph?

Back

No association means that there is no discernible relationship between the two variables; changes in one variable do not affect the other.

Front

How can you identify a positive association in a scatterplot?

Back

A positive association can be identified by a pattern where points trend upwards from left to right.

Front

How can you identify a negative association in a scatterplot?

Back

A negative association can be identified by a pattern where points trend downwards from left to right.

Front

What is the significance of the correlation coefficient?

Back

The correlation coefficient quantifies the strength and direction of a linear relationship between two variables, ranging from -1 to 1.

Front

What does a correlation coefficient of 0 indicate?

Back

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

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.

Front

What type of association is indicated by a scatterplot with points forming a horizontal line?

Back

A horizontal line indicates no association between the variables.