StatsDirect has been designed to be exceptionally easy to use and contains example-rich help.
Main features:
- Core Features
- Data in/out
- Help
- Data Manipulation
- Descriptive Statistics
- Confidence Intervals
- Pictorial Statistics
- Parametric Methods
- Non-parametric Methods
- Regression & Correlation
- Analysis of Variance
- Agreement Analysis
- Meta-analysis
- Survival Analysis
- Distribution Functions
- Chi-square
- Sign & Exact Contingency
- Proportions
- Rates
- Sample Sizes
- Randomization
- Miscellaneous
- System Requirements
- Availability
As a student of statistics, I use StatsDirect very often. It is the best and cheapest statistical software on the market.