Question

Scatterplot What is a scatterplot and how does it help us?

Short answer

A scatterplot is a graph that is used to represent paired observations of quantitative variables.

The pattern of the simultaneous change in paired observations helps to identify the trend between the two variables. If the points on the scatterplot follow a straight line pattern, it can be said that the two variables are linearly associated.

Step-by-step solution

Describe a scatterplot

A scatterplot is a kind of graph plotted between two variables that take numerical values.It takes observations in a paired form when one variable is scaled on the horizontal axis and the other on the vertical axis.

Application of scatterplot

The pattern of the points plotted depicts the relationship between the variables. The approximate trend can be used to identify the overall behavior of the two variables when studied jointly.

If the points follow a straight line pattern, it can be said that the two variables are linearly related. Similarly, if the points follow a parabolic pattern, it can be said that the two variables have a quadratic relationship.

It can also be used to determine extreme values in a set of observations.