9.1. Rounding Numbers9.1.1. ROUND( ), ROUNDDOWN( ), ROUNDUP( ): Rounding Numbers9.1.2. MROUND( ), CEILING( ), and FLOOR( ): More Rounding Functions9.1.3. INT( ) and TRUNC( ): Chopping Off Non-Whole Numbers9.1.4. EVEN( ) and ODD( ): Rounding Up to Even or Odd Values9.2. Groups of Numbers9.2.1. SUM( ): Summing Up Numbers9.2.2. COUNT( ), COUNTA( ), and COUNTBLANK( ): Counting Items in a List9.2.3. MAX( ) and MIN( ): Finding Maximum and Minimum Values9.2.4. LARGE( ), SMALL( ), and RANK( ): Ranking Your Numbers9.2.5. AVERAGE( ) and MEDIAN( ): Finding Average or Median Values9.2.6. MODE( ): Finding Numbers That Frequently Occur in a List9.2.7. PERCENTILE( ) and PERCENTRANK( ): Advanced Ranking Functions9.2.8. FREQUENCY( ): Identifying to Which Category a Number Belongs9.3. General Math Functions9.3.1. PRODUCT( ), FACT( ), POWER( ), and SQRT( ): Products, Factorials, Powers, and Square Roots9.3.2. QUOTIENT( ) and MOD( ): Higher Division9.3.3. ABS( ) and SIGN( ): Absolute Value and Determining a Number’s Sign9.3.4. RAND( ) and RANDBETWEEN( ): Generating Random Numbers9.3.5. GCD( ) and LCM( ): Greatest and Least Common Denominator9.3.6. COMBIN( ) and PERMUT( ): Figuring Combinations and Permutations9.4. Trigonometry and Advanced Math9.5. Advanced Statistics