Sparklines will assist charts sparklines have certain advantages over charts. If you have a large number of rows of data, it might be difficult to find relevant data in a traditional chart. But if you placed a sparkline on each row, it will be right next to its source data, making it easy to see relationships and trends for multiple data series at the same time. Here you can see that the chart for 10 sales persons it's quite cluttered and difficult to follow. But the sparklines allow you to clearly follow the data of large number of sales persons sparklines are ideal for situations when you need a clear overview of the data at a glance. And when you don't need all of the features are fulfilled.
The chart on the other hand, charts are ideal for situations when you want to represent the data in greater detail, and they are often better for comparing different data CDs