SUMXMY2()

Syntax. SUMXMY2(array_x,array_y)

Definition. This function returns the sum of squares of differences of corresponding values in two arrays (see Figure 16-37).

Arguments

• array_x (required) The first array or range of values

• array_y (required) The second array or range of values

Background. The arguments should be numbers, names, arrays, or references containing numbers.

If an array or a reference argument contains text, logical values, or empty cells, those values are ignored. However, cells with the value zero are included.

If array_x and array_y have a different number of values, the SUMXMY2() function returns the #N/A error. The equation for the sum of the squared differences is:

Σ(x – y)²

The solution of this equation is built for the example (see Figure 16-37) as follows:

1. In two specified ranges:

   • Range A: 4, 5

   • Range B: 2, 3

   The values next to each other are subtracted:

   • First value in the ranges A and B: 4 – 2

   • Second value in the ranges A and B: 5 – 3

2. The square sums are added (see Figure 16-37):

   2² + 2² = 4 + 4 = 8

Figure 16-37. The SUMXMY2() function.

See Also

SUMPRODUCT(), SUMX2MY2(), SUMX2PY2()

Sample Files

Use the SUMXY worksheet in the Chapter16.xls or Chapter16.xlsx sample file. The sample files are found in the Chapter16 folder. For more information about the sample files, see the section titled Using the Sample Files.