data.ballb {desk}

Defective Ball Bearings

Description

This is a data set on the percentage of defective units in the production of ball bearings.

Usage

data.ballb

Format

A data frame with six observations on the following two variables:

defbb	share of defective ball bearings (per thousand).
nshifts	number of shifts between two maintenances.

Details

In Auer (2023, Chap. 16) and Auer et al. (2023, Chap. 16) these hypothetical data are used to illustrate the consequences of error terms with an expected value deviating from zero.

Source

Auer, L.v. (2023): Ökonometrie - Eine Einführung, 8th ed., Springer-Gabler (https://www.oekonometrie-lernen.de).

References

Auer, L.v., Hoffmann, S. & Kranz, T. (2023): Ökonometrie - Das R-Arbeitsbuch, 2nd ed., Springer-Gabler (https://www.oekonometrie-lernen.de).