Excel Chapter  21 of 24: Excel Statistical Functions and Formulas Excel offers you 80 functions in the statistical  category. Here are the ones (10) that you will use more often.
 Functions What it Does AVERAGE Returns the average of its arguments AVERAGEA Returns the average of its arguments, including numbers, text, and logical values COUNT Counts how many numbers are in the list of arguments COUNTA Counts how many values are in the list of arguments COUNTIF Counts the number of nonblank cells within a range that meet the given criteria MAX Returns the maximum value in a list of arguments MAXA Returns the maximum value in a list of arguments, including numbers, text, and logical values MIN Returns the minimum value in a list of arguments MINA Returns the smallest value in a list of arguments, including numbers, text, and logical values RANK Returns the rank of a number in a list of numbers LARGE Returns the k-th largest value in a data set SMALL Returns the k-th smallest value in a data set
 MAX, MAXA, MIN and  MINA =MIN(A1:A5) will return the smallest  value in the range A1 to A5. Arguments can be separated with a colon or with commas if the cells or ranges are not contiguous like in =MIN(A1,A2,A4,A5) or =MIN(A1,A2,A4:A5). MAX in an interesting functions to highlight the latest date within a range but make sure that the format of the cell where you use MIN or MAX is ''Date''.  LARGE, SMALL And what if you want the second or third largest value or the second smallest value. Use LARGE and SMALL like this: =LARGE(A1:A5,2), =LARGE(A1:A5,3), =SMALL(A1:A5,2) As a matter of facts you can forget about MIN and MAX with: =LARGE(A1:A5,1), =SMALL(A1:A5,1) COUNT and  COUNTA If you want to count the number of cells that are not blank COUNT and COUNTA will return a different result if in one of the cells there is a text. OR A SPACE=COUNT(A1:A5) will return 5 is only numbers OR DATES are present in cells A1 to A5 and 4 if there is a letter, an empty cell OR A SPACE in one of the cells. The SPACE thing is important to remember when you are importing data from an external source.=COUNTA(A1:A5) will return 5 unless one of the cells is empty. If all the cells contain numbers, letters OR SPACES the result will be 5. AVERAGE and AVERAGEA Watch for dates! If you want the average of a range and there is a date within there is a problem because dates are numbers. If all the cells are dates, indeed you can calculate the average date of.... The difference between AVERAGE and AVERAGEA becomes evident when one of the cells contains a text OR A SPACE and don't forget the SPACE. A cell containing a space is NOT empty.

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Excel Statistical Functions and Formulas