Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. Each point represents an observation in the dataset.

Front

What does a positive association in a scatterplot indicate?

Back

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

Front

What does a negative association in a scatterplot indicate?

Back

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

Front

What does 'no association' mean in the context of a scatterplot?

Back

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

Front

What is a correlation coefficient?

Back

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

Front

What is positive correlation?

Back

Positive correlation occurs when the correlation coefficient is greater than 0, indicating that both variables move in the same direction.

Front

What is negative correlation?

Back

Negative correlation occurs when the correlation coefficient is less than 0, indicating that as one variable increases, the other decreases.

Front

What is the purpose of using scatterplots?

Back

Scatterplots are used to visually assess the relationship between two quantitative variables and to identify patterns, trends, or correlations.

Front

How can outliers affect a scatterplot?

Back

Outliers can skew the interpretation of the data, potentially misleading conclusions about the relationship between the 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.