Scatterplots Flashcard Review

Front

What is a scatterplot?

Back

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

Front

What does a strong negative trend in a scatterplot indicate?

Back

A strong negative trend indicates that as one variable increases, the other variable decreases significantly.

Front

What does a weak positive trend in a scatterplot indicate?

Back

A weak positive trend indicates that as one variable increases, the other variable also increases, but the relationship is not strong.

Front

What is an outlier in a scatterplot?

Back

An outlier is a data point that differs significantly from other observations in the dataset, often appearing far away from the trend.

Front

What does a negative association between two variables mean?

Back

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

Front

What is the purpose of a scatterplot?

Back

The purpose of a scatterplot is to visually assess the relationship between two quantitative variables.

Front

What type of data is best represented in a scatterplot?

Back

Scatterplots are best used for displaying the relationship between two numerical (quantitative) variables.

Front

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

Back

A strong positive trend is identified when the points on the scatterplot slope upwards from left to right, indicating that both variables increase together.

Front

What does it mean if there is no association between two variables in a scatterplot?

Back

If there is no association, the points on the scatterplot do not show any discernible pattern or trend.

Front

What is the significance of the correlation coefficient in relation to scatterplots?

Back

The correlation coefficient quantifies the strength and direction of the relationship between two variables, ranging from -1 to 1.