Even a statistician can take advantage of these tools by saving time writing formulas for complex analysis. With Excel, a non-statistician can perform these actions without knowing the formulas to create them. The Toolpak is mainly used by statisticians that want to perform calculations for t-tests, chi-square tests and correlations. Complex formulas can be difficult to create in Excel, and there is no reason to recreate what has already been done using the Analysis Toolpak. It's more of a simple data storage and analysis application based on formulas you create. Excel 2019 isn't made for hardcore statistics. You would use this tool if you want more statistical analysis on your data. With this tool, you can create charts about your current statistical data. The Toolpak is an add-in that you must first install before you can use it. Just like the other add-ins and analysis tools, the Analysis Toolpak can only be used on one worksheet at a time, which means that any evaluations are based on the active worksheet and cross-referencing will not work.