Scatterplots - Identify association

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 it mean if a scatterplot shows a positive association?

Back

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

Front

What does it mean if a scatterplot shows a negative association?

Back

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

Front

What is a linear relationship in a scatterplot?

Back

A linear relationship is when the data points in a scatterplot can be approximated by a straight line.

Front

What is a non-linear relationship in a scatterplot?

Back

A non-linear relationship is when the data points do not follow a straight line and may curve or have a different pattern.

Front

How can you identify a strong correlation in a scatterplot?

Back

A strong correlation is indicated by data points that are closely clustered around a straight line, either positively or negatively.

Front

What does it mean if there is no relationship in a scatterplot?

Back

No relationship means that changes in one variable do not affect the other variable, and the points are scattered randomly.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation indicates that one variable directly affects the other.

Front

What is the purpose of using scatterplots in data analysis?

Back

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

Front

What does a scatterplot with a downward slope indicate?

Back

A downward slope indicates a negative correlation, meaning that as one variable increases, the other decreases.