Go to Excel options and then choose Add-ins. This add-in is great to add new analysis features for Excel spreadsheets, under the Data Analysis button in the menu making possible to run analysis and generate new charts for statistics and other useful applications including: Anova: Single Factor, Anova: Two-Factor with Replication, Anova: Two-Factor, Without Replication, Correlation, Covariance, Descriptive Statistics, Exponential Smoothing, F-Test Two Sample for Variance, Fourier Analysis, Histogram, Moving Average, Random Number Generation, Rank and Percents, Regression, Sampling, t-Test: Paired Two Sample for Means. Analysis ToolPak is an add-in for Microsoft Excel that is available in Microsoft Excel. Analysis ToolPak VBA is another variant that can be used with Macros, while the Analysis ToolPak is for interactive use.