STEYX

Microsoft Office Excel 2003

See Also

Returns the standard error of the predicted y-value for each x in the regression. The standard error is a measure of the amount of error in the prediction of y for an individual x.

Syntax

STEYX(known_y's,known_x's)

Known_y's    is an array or range of dependent data points.

Known_x's    is an array or range of independent data points.

Remarks

  • The arguments must either be numbers or be names, arrays, or references that contain numbers.
  • If an array or reference argument contains text, logical values, or empty cells, those values are ignored; however, cells with the value zero are included.
  • If known_y's and known_x's are empty or have a different number of data points, STEYX returns the #N/A error value.
  • The equation for the standard error of the predicted y is:

    Equation

    where x and y are the sample means AVERAGE(known_x’s) and AVERAGE(known_y’s), and n is the sample size.

Example

The example may be easier to understand if you copy it to a blank worksheet.

ShowHow?

  1. Create a blank workbook or worksheet.
  2. Select the example in the Help topic. Do not select the row or column headers.

    Selecting an example from Help

    Selecting an example from Help

  3. Press CTRL+C.
  4. In the worksheet, select cell A1, and press CTRL+V.
  5. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Tools menu, point to Formula Auditing, and then click Formula Auditing Mode.
 
1
2
3
4
5
6
7
8
A B
Known y Known x
2 6
3 5
9 11
1 7
8 5
7 4
5 4
Formula Description (Result)
=STEYX(A2:A8,B2:B8) Standard error of the predicted y-value for each x in the regression (3.305719)