Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

Front

What does a positive correlation in a scatterplot indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also increases.

Front

What does a negative correlation in a scatterplot indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to visually assess the relationship between two quantitative variables.

Front

What does 'no association' mean in the context of scatterplots?

Back

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

Front

How can you identify a linear association in a scatterplot?

Back

A linear association can be identified if the points in the scatterplot form a straight line pattern.

Front

What is the difference between linear and non-linear associations?

Back

Linear associations show a straight-line relationship, while non-linear associations show a curved relationship.

Front

What does the slope of a line in a scatterplot represent?

Back

The slope represents the rate of change between the two variables; a positive slope indicates a positive correlation, while a negative slope indicates a negative correlation.

Front

What is an outlier in a scatterplot?

Back

An outlier is a data point that lies far away from the other points in the scatterplot, potentially indicating an anomaly.

Front

How can scatterplots help in making predictions?

Back

Scatterplots can help in making predictions by showing trends that can be used to estimate values of one variable based on another.