PREFACE:rn1. THE NATURE OF PROBABILITY AND STATISTICrn2. FREQUENCY DISTRIBUTIONS AND GRAPHSrn3. DATA DESCRIPTIONrn4. PROBABILITY AND COUNTING RULESrn5. DISCRETE PROBABILITY DISTRIBUTIONSrn6. THE NORMAL DISTRIBUTIONSrn7. CONFIDENCE INTERVALS AND SAMPLE SIZErn8. HYPOTHESIS TESTINGrn9. TESTING THE DIFFERENCE BETWEEN TWO MEANS; TWO VARIANCES; AND TWO PROPORTIONSrn10. CORRELATION AND REGRESSIONrn11. OTHER CHI-SQUARE TESTrn12. ANALYSIS OF VARIANCErn13. NON PARAMETRIC STATISTICSrn14. SAMPLING AND SIMULATIONS