# What is a radar chart?

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A radar chart, also known as a spider chart or polar chart, is a unique way to display data with multiple variables or dimensions. It’s great for comparing multiple items, allowing you to quickly see their strengths and weaknesses. Let’s say you’re reading a blog post comparing different smartphone types or even browsing social media posts about various diets.

Here’s how a radar chart works:

1. Imagine a circle, and we divide it into equal sections, like slices of a pie. Each slice represents one variable or dimension of the data.
2. We place a central point in the middle of the circle, which is the lowest value (usually zero) for each variable.
3. We draw a scale along each slice outward from the central point. The further you go out, the higher the value for that variable.
4. Now, we can plot the data points for each item on the corresponding scales. By connecting these points, we form a shape for each item.
5. Finally, we can compare these shapes to see which item performs better in certain areas.