Scatterplots - 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 correlation in the context of scatterplots?

Back

Correlation refers to the strength and direction of a linear relationship between two variables, which can be positive, negative, or zero.

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 does it mean if there is no association in a scatterplot?

Back

No association means that there is no discernible pattern or relationship between the two variables being plotted.

Front

How can you determine the strength of a correlation from a scatterplot?

Back

The strength of a correlation can be determined by how closely the data points cluster around a line; the closer they are, the stronger the correlation.

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 outliers.

Front

What does it indicate if a scatterplot has a non-linear relationship?

Back

A non-linear relationship indicates that the relationship between the variables cannot be accurately represented by a straight line.

Front

What is an example of a positive correlation in real life?

Back

An example of a positive correlation is the relationship between hours studied and exam scores; generally, more study time leads to higher scores.