These are called contextual tabs, meaning that they only appear when you select a chart. Most of the menu options we’ll be referring to below can be found on the Design or Format tabs. After all, even if the slices are not labeled with individual values or percentages, and if there is no legend (doesn’t sound like a very good chart, to be honest), the relative size of each slice is a visual indicator of the value of each variable in relation to the other variables, and to the pie as a whole. Pie charts are notoriously bad for displaying lots of data points, simply because the slices will be too small, making them meaningless for making a point visually.Īs long as you remember that the data in a pie chart will always add up to 100%, you can appreciate why it’s so easy to read. Negative values will be displayed as positive values, as zeros won’t be displayed at all. you have negative or zero values in your dataset.Since each variable will have only one value, pie charts are a snapshot of one moment in time.

you want to display a trend over time.you want to display more than one data series (i.e., each category has multiple data points).Let’s get this out of the way - pie charts are not ideal for every type of data. It’s easy to create and even easier to read. It usually doesn’t require the audience to have an in-depth knowledge of the subject being reported on, nor any lengthy explanations of what it is meant to describe. A pie chart is very useful for displaying basic statistical data.

Create pie chart in excel 2007