infbetas |

Scaled difference in the estimated betas for influence statistics.

DFBETAS are the scaled difference in the estimated betas between the original equation and an equation estimated without that observation.

Syntax

equation_name.infbetas(options) [base_name]

where base_name is an optional naming suffix used to store the DFBETAS into the workfile.

Options

t | Show a table of the statistics (the default is to display a graph view of the specified statistics). |

rows = key | The number of observations/rows to display in the table, where key can be either “50”, “100” (default), “150”, or “200”. |

g=arg | arg is the name of an object in which the graph output will be saved. |

prompt | Force the dialog to appear from within a program. |

Examples

equation eq1.ls y c x z

eq1.infbetas

displays a graph of the DFBETAS corresponding to the coefficients for C, X, and Z.

eq1.infbetas(t) out

will display a table showing the first 150 rows of DFBETAs in table form and saves the results in the series COUT, XOUT and ZOUT.

Cross-references

See also
“Influence Statistics”.

See also
Equation::infstats.