Which Chart Type Is the Best When You Want to Chart Two Unrelated Data Types?


Angela Bailey

When it comes to charting two unrelated data types, choosing the right chart type can make a significant difference in effectively conveying your data. Different chart types have their strengths and weaknesses, so it’s crucial to consider the characteristics of your data before making a decision. In this article, we will explore various chart types and discuss their suitability for charting two unrelated data types.

Bar Charts

Bar charts are widely used for comparing categorical data. They are an excellent choice when you want to display two unrelated data types side by side. By placing each category on the x-axis and representing their values with vertical bars, bar charts allow for easy comparison between multiple sets of data.


  • Data Type 1: Sales of different products (categories)
  • Data Type 2: Profit margin of each product (values)

Line Charts

Line charts are ideal for showing trends over time or continuous data. While they are commonly used for a single data type, they can also be useful for comparing two unrelated data types with similar x-axis values.


  • Data Type 1: Temperature variation throughout the day
  • Data Type 2: Number of visitors at a tourist attraction throughout the day

Pie Charts

Pie charts are effective for illustrating proportions and percentages. Although they may not be suitable for directly comparing two unrelated data types, you can use them to represent the distribution of each type within a whole.


  • Data Type 1: Market share of different companies
  • Data Type 2: Age distribution of customers within each company

Scatter Plots

Scatter plots are perfect for visualizing the relationship between two continuous variables. They are particularly useful when there is no clear correlation or pattern between the two data types.


  • Data Type 1: Amount of rainfall in different cities
  • Data Type 2: Air pollution levels in the same cities

Bubble Charts

Bubble charts are an extension of scatter plots that add a third dimension to represent additional data. They can be used to compare three unrelated data types simultaneously.


  • Data Type 1: Population size of different countries
  • Data Type 2: GDP per capita of each country
  • Data Type 3: Carbon emissions per capita of each country (represented by bubble size)

In conclusion,

Choosing the right chart type when charting two unrelated data types depends on the nature and purpose of your data. Consider factors such as the type of data, comparison requirements, and patterns you want to highlight.

Bar charts work well for side-by-side comparison, line charts for trends, pie charts for proportions, scatter plots for relationships, and bubble charts when a third dimension is involved. Selecting the appropriate chart type will ensure your data is effectively presented and easily understood.

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