Pie and donut charts in Power BI - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the main purpose of a pie chart?

A pie chart shows how parts make up a whole by dividing a circle into slices. Each slice represents a category's proportion.

beginner

How does a donut chart differ from a pie chart?

A donut chart is like a pie chart but with a hole in the center. This hole can be used to display extra information or make the chart easier to read.

beginner

Why should you avoid using too many slices in a pie or donut chart?

Too many slices make the chart hard to read and compare. It's better to group smaller categories into an 'Other' slice for clarity.

beginner

What is a good real-life example to explain pie charts?

Imagine a pizza cut into slices where each slice shows how many friends like a certain topping. The whole pizza is all friends combined.

beginner

In Power BI, how do you create a donut chart?

Select your data, then choose the donut chart icon from the Visualizations pane. Drag the category field to 'Legend' and the value field to 'Values'.

What does each slice in a pie chart represent?

A A separate dataset

B A part of the whole

C A timeline event

D A data filter

Each slice shows a part of the total, helping you see proportions.

What is the main visual difference between a pie chart and a donut chart?

A Donut charts use 3D effects

B Pie charts have bars

C Donut charts have a hole in the center

D Pie charts show trends over time

Donut charts look like pies with a hole in the middle.

Why should you limit the number of slices in a pie chart?

A Too many slices make it hard to read

B Power BI does not allow more than 5 slices

C More slices slow down the computer

D Slices must be equal size

Too many slices clutter the chart and confuse viewers.

In Power BI, where do you drag the category field to create a pie chart?

A Filters

B Values

C Tooltips

D Legend

The category field goes to Legend to define slices.

Which scenario is best for using a donut chart?

A Showing parts of a whole with extra info in the center

B Displaying time series data

C Comparing two unrelated datasets

D Showing detailed text data

Donut charts show parts of a whole and can display info in the center hole.

Explain how pie and donut charts help visualize data and when to use each.

Think about how a pizza slice shows part of the whole pizza.

Describe the steps to create a donut chart in Power BI and best practices for its use.

Remember the Visualizations pane and dragging fields.