STEYX

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

  • Arguments can either be numbers or names, arrays, or references that contain numbers.
  • Logical values and text representations of numbers that you type directly into the list of arguments are counted.
  • 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.
  • Arguments that are error values or text that cannot be translated into numbers cause errors.
  • If known_y's and known_x's have a different number of data points, STEYX returns the #N/A error value.
  • If known_y's and known_x's are empty or have less than three data points, STEYX returns the #DIV/0! 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.

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Selecting an example from Help
  • Press CTRL+C.
  • In the worksheet, select cell A1, and press CTRL+V.
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Known y Known x
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Formula Description (Result)
=STEYX(A2:A8,B2:B8) Standard error of the predicted y-value for each x in the regression (3.305719)
 
 
Applies to:
Excel 2003