Problem 41 - Thinking Mathematically

Question

What is a scatter plot?

Step-by-Step Solution

Answer

A scatter plot is a data visualization tool that uses Cartesian coordinates to display values for two variables from a dataset. It is used to observe relationships between variables, with each data point representing a single instance in the dataset.

Step 1: Scatter Plot Definition

A scatter plot (also known as a scatter graph, scatter chart, scattergram, or scatter diagram) is a plot using Cartesian coordinates to display values for typically two variables from a dataset. The data is displayed as a collection of points, each of which represents the values of an instance in the dataset.

Step 2: Purpose of a Scatter Plot

Scatter plots are used to observe relationships between variables. They show how much one variable is related to another. The closer the data points come together to form a straight line, the higher the correlation between the two variables, or the stronger the relationship.

Step 3: Construction of a Scatter Plot

When creating a scatter plot, each piece of data is plotted as a point, whose position along the X (horizontal) and Y (vertical) axis represents the values of two variables. By doing so, each point on the plot represents a single instance in the dataset.