rangeCheck function

Check for horizontal and vertical extrapolation

Regression model only work in a specific range and extrapolation horizontally (outside the original range) or vertically (extreme norm scores) might lead to inconsistent results. The function generates a message, indicating extrapolation and the range of the original data.

rangeCheck(
  object,
  minAge = NULL,
  maxAge = NULL,
  minNorm = NULL,
  maxNorm = NULL,
  digits = 3,
  ...
)

Arguments

• object: The regression model or a cnorm object
• minAge: The lower age bound
• maxAge: The upper age bound
• minNorm: The lower norm value bound
• maxNorm: The upper norm value bound
• digits: The precision for rounding the norm and age data
• ...: additional parameters

Returns

the report

Examples

m <- cnorm(raw = elfe$raw, group = elfe$group)
rangeCheck(m)

See Also

Other model: bestModel(), checkConsistency(), cnorm.cv(), derive(), modelSummary(), print.cnorm(), printSubset(), regressionFunction(), summary.cnorm()