StatCalc was designed for students, researchers, and managers who need a desktop statistics calculator. It calculates descriptive and inferential statistics and graphs distributions. It has a context-sensitive statistics handbook with definitions, formulas, and practice exercises. It estimates margins of error and measures standardized scores. Enter and save data for a single variable and calculate descriptive statistics. This update of StatCalc 3.02 has added a Stat Tutor with more than 90 screens to help students learn basic statistics and use the StatCalc modules. A sample size estimator module has also been added. This minor revision includes updates to the Statistics Handbook.