Scatter charts, also known as scatter plots or scatter graphs, are often used to display continuous data relationships.
The demo below illustrates the relationship between vitamin D and preventing COVID-19 infection. On the x-axis is the mean of vitamin D (nmol/L), whereas on the y-axis is the Covid-19 cases per one million of the population. The data was collected from 20 European countries on April 8th, 2020.

Good to know


  • Allows a quick overview of the data relationship.
  • Visualize patterns with ease.
  • Easy to interpret and understand.
  • Outliers are quick to identify.
  • Existence of relationship (or non relation) between variables is quickly identified.
  • Can handle a large number of data sets.
  • Flexible, as functions with almost any continuous scale data.


  • Data can be easily cluttered with a large number of series.
  • Sometimes it is tricky to determine with accuracy distribution, correlations, and patterns.


To get a precise correlation, adding a trend line to the scatter chart is recommended, such as a regression line.


Learn more about how to create a scatter chart with Highcharts.