You'd reach for this when you need to run statistical analysis on survey data without opening SPSS or similar desktop tools. It exposes operations for crosstabs with significance testing, ANOVA, correlation analysis, and can export results to Excel format. The server connects to a hosted API at spss.insightgenius.io, so you're working with a remote service rather than local computation. Useful when you're already in Claude analyzing survey results and need to run chi-square tests or compare means across groups without context switching to another application.