Ledermann Bound for Number of Indicators

Description

The Ledermann bound is given by the solution k for (M - k)^2 >= M + k, where M is the number of indicator variables. The maximum possible number of factors is the largest integer smaller than or equal k.

Usage

1

Arguments

M

an integer indicating the number of indicator variables or a matrix of data, in which case ncol(M) is used as the number of indicator variables.

Value

The Ledermann bound, a positive real number.

Author(s)

Paul Gilbert and Erik Meijer

References

Tom Wansbeek and Erik Meijer (2000) Measurement Error and Latent Variables in Econometrics, Amsterdam: North-Holland. (note p169.)

See Also

FAfitStats