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 strong association in a scatterplot indicate?

Back

A strong association indicates that as one variable increases or decreases, the other variable tends to increase or decrease in a consistent manner.

Front

What does a weak association in a scatterplot indicate?

Back

A weak association indicates that there is little to no predictable relationship between the two variables.

Front

What is a trend line in a scatterplot?

Back

A trend line is a straight or curved line that represents the general direction of the data points in a scatterplot.

Front

What does it mean for a scatterplot to be linear?

Back

A linear scatterplot shows a straight-line relationship between the two variables.

Front

What does it mean for a scatterplot to be non-linear?

Back

A non-linear scatterplot shows a curved relationship between the two variables, indicating that the change in one variable does not result in a constant change in the other.

Front

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

Back

A strong positive correlation is identified when the data points cluster closely around a line that slopes upwards from left to right.

Front

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

Back

A strong negative correlation is identified when the data points cluster closely around a line that slopes downwards from left to right.

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, correlations, or patterns.

Front

What does it mean if a scatterplot has no correlation?

Back

No correlation means that there is no discernible pattern or relationship between the two variables; the data points are scattered randomly.