Scatterplots Correlation

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, where each point represents an observation in the dataset, allowing for the visualization of relationships between the variables.

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 no correlation mean in the context of a scatterplot?

Back

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

Front

How can you visually identify a positive correlation in a scatterplot?

Back

A positive correlation can be visually identified by an upward trend in the points from left to right.

Front

How can you visually identify a negative correlation in a scatterplot?

Back

A negative correlation can be visually identified by a downward trend in the points from left to right.

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to identify relationships, trends, and patterns between two quantitative variables.

Front

What is the correlation coefficient?

Back

The correlation coefficient is a numerical measure that quantifies the strength and direction of a 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 correlation 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.