The `SUMXMY2` function in Excel is used to calculate the sum of the squares of differences between corresponding values in two arrays. Essentially, it takes two sets of numbers, subtracts one value in the first set from the corresponding value in the second set, squares the result, and then sums all these squared differences.
Here’s the syntax for the `SUMXMY2` function:
SUMXMY2(array_x, array_y)
- `array_x`: The first array or range of values.
- `array_y`: The second array or range of values.
Steps to Use `SUMXMY2`:
- Prepare Your Data: Ensure that you have two equal-sized ranges (arrays) of numeric data. These will be your inputs for the function.
- Select the Cell: Click on the cell where you want the result of the `SUMXMY2` function to appear.
- Enter the Function:
- Begin by typing `=SUMXMY2(` into the cell.
- Select the range for `array_x`. You can do this by clicking and dragging to highlight the range of cells.
- Enter a comma `,`.
- Select the range for `array_y` in the same way you did for `array_x`.
- Close the parenthesis `)`.
- Press Enter: After you’ve input the function into the cell, press Enter, and Excel will compute the sum of the squared differences.
Example:
Suppose you have values in cells A1 through A5 and B1 through B5:
- Cells A1 to A5 contain: 1, 2, 3, 4, 5
- Cells B1 to B5 contain: 2, 3, 4, 5, 6
To calculate the sum of squares of differences between these two sets, enter the following formula in a cell:
=SUMXMY2(A1:A5, B1:B5)
Notes:
- Both `array_x` and `array_y` must have the same number of elements. If they do not, Excel will return an error.
- The function computes `(X1 – Y1)^2 + (X2 – Y2)^2 + … + (Xn – Yn)^2`.
By following these steps, you can effectively use the `SUMXMY2` function in Excel to compute sums of squared differences.
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