Should you avoid pie charts? Pie charts and donut charts are okay in some circumstances–when they meet all seven of my pie chart rules. Here are pie chart guidelines to follow, plus a bunch of pie chart alternatives so you know what to use instead.
Data bars are miniature within-cell bar charts. I primarily use them to quickly explore patterns in my dataset. Sometimes I decide to make an actual bar chart of the data later on. Other times, I’m simply using these tiny charts to help my brain spot the key patterns.