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 ordered pair.

Front

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

Back

A linear association means that the data points can be approximated by a straight line, indicating a consistent relationship between the variables.

Front

What is a positive correlation in a scatterplot?

Back

A positive correlation occurs when an increase in one variable leads to an increase in the other variable, resulting in an upward trend in the scatterplot.

Front

What is a negative correlation in a scatterplot?

Back

A negative correlation occurs when an increase in one variable leads to a decrease in the other variable, resulting in a downward trend in the scatterplot.

Front

What does 'no association' mean in a scatterplot?

Back

No association means that there is no predictable pattern between the two variables; the points are scattered randomly.

Front

How can you identify a linear and negative association in a scatterplot?

Back

A linear and negative association can be identified when the data points form a straight line that slopes downward from left to right.

Front

What is the relationship between the number of workers and the time it takes to build a house?

Back

This relationship typically shows a negative correlation; as the number of workers increases, the time to build decreases.

Front

What type of correlation is shown between temperature and ice cream sales?

Back

This shows a positive correlation; as the temperature increases, ice cream sales also increase.

Front

What does it mean if a scatterplot is non-linear?

Back

A non-linear scatterplot indicates that the relationship between the variables cannot be represented by a straight line, often showing curves or clusters.

Front

What is an example of a situation with no correlation?

Back

An example of no correlation could be the relationship between the amount of junk food consumed and a friend's height; there is no predictable pattern.