AVERAGEIFS

AVERAGEIFS(average_range, criteria_range1, criteria1 [,criteria_range2, criteria2] [..])

Returns the arithmetic mean of all the numbers in a range that satisfies multiple conditions.

average_range	The actual cells to average.
criteria_range1	The range of cells you want evaluated.
criteria1	The expression that contains the criteria.
criteria_range2	(Optional) The range of cells you want evaluated.
criteria2	(Optional) The expression that contains the criteria.

REMARKS

* This function was added in Excel 2007 to replace the AVERAGEIF function.
* For an illustrated example refer to the page under Advanced Functions
* This function includes hidden cells.
* This function is not case sensitive when matching text strings.
* This function supports wildcards (? and *).
* Wildcard character: ? = a single character.
* Wildcard character: * = multiple characters.
* To include the actual wildcard characters use a tilde prefix (~?), (~*) and (~~).
* This function uses the actual cell values and not the displayed formatted values.
* This function can handle full column references ($A:$A) very efficiently because it ignores empty cells.
* All the "criteria_range" ranges must be the same size and shape as "criteria_range1"
* If "average_range" is blank or a text value, then #DIV/0! is returned.
* If "average_range" contains any cells that are not numbers, then #DIV/0! is returned.
* If "average_range" contains any empty cells, these are considered equivalent to a 0 value.
* If "criteria_range" contains any empty cells, then these are excluded.
* The "criteria" can contain wildcard characters.
* If there are no cells that meet the criteria, then #DIV/0! is returned.
* Arguments that are zero are included.
* Arguments that are logical values or text are excluded.
* You can have up to 127 different criteria.
* You can use the AVERAGE function to return the arithmetic mean with no conditions.
* You can use the AVERAGEA function to include logical values and text.
* You can use the AVERAGEVISIBLEIFS - User Defined Function to exclude hidden cells.
* This is similar to the COUNTIFS, MAXIFS, MINIFS and SUMIFS functions.
* For the Microsoft documentation refer to support.microsoft.com
* For the Google documentation refer to support.google.com

	A	B	C
1	=AVERAGEIFS(C1:C5,B1:B5,"Barry") = 25	Barry	30
2	=AVERAGEIFS(C1:C5,B1:B5,"=Barry") = 25	Simon	40
3	=AVERAGEIFS(C1:C5,B1:B5,"=Simon") = 40	Barry	20
4	=AVERAGEIFS(C1:C5,B1:B5,"Barry",C1:C5,"<>20") = 30	James	60
5	=AVERAGEIFS(C1:C5,B1:B5,"Barry",C1:C5,"=20") = 20	David	80
6	=AVERAGEIFS(C1:C5,B1:B5,"Barry",C1:C5,">"&C3) = 30

1 - What is the average of all the numbers in the range "C1:C5" that have "Barry" in the range "B1:B5",
2 - What is the average of all the numbers in the range "C1:C5" that have "Barry" in the range "B1:B5". Notice that prefixing the condition with an equal sign means the same thing.
3 - What is the average of all the numbers in the range "C1:C5" that have "Simon" in the range "B1:B5".
4 - What is the average of all the numbers in the range "C1:C5" that have "Barry" in the range "B1:B5" and have a value not equal to 20 in the range "C1:C5".
5 - What is the average of all the numbers in the range "C1:C5" that have "Barry" in the range "B1:B5" and have a value equal to 20 in the range "C1:C5".
6 - What is the average of all the numbers in the range "C1:C5" that have "Barry" in the range "B1:B5" and have a value greater than the value in cell "C3" in the range "C1:C5".
6 - include wildcards and date filtering.