SUMPRODUCT

Calculates the sum of the products of corresponding entries in two equal-sized arrays or ranges.

Sample Usage

Syntax

SUMPRODUCT(array1, [array2, ...])

• array1 - The first array or range whose entries will be multiplied with corresponding entries in the second such array or range.

• array2, ... - [ OPTIONAL - {1,1,1,...} with same length as array1 by default ] - The second array or range whose entries will be multiplied with corresponding entries in the first such array or range.

Notes

• Matrix multiplication, MMULT, can also be accomplished using a combination of TRANSPOSE and SUMPRODUCTfunctions.

See Also

TRANSPOSE: Transposes the rows and columns of an array or range of cells.

MMULT: Calculates the matrix product of two matrices specified as arrays or ranges.

In order to use the SUMPRODUCT formula, start with your edited Excellentable:

	A	B
1	array_X	array_Y
2	9	8
3	6	2
4	1	-2
5
6	SUMPRODUCT	82