Datasets

Phone data

LinRegOutliers.DataSets.phones — Constant

Phone data

Components

year::Integer: years from 1950 to 1973.
calls::Float64: phone calls (in millions).

Reference

P. J. Rousseeuw and A. M. Leroy (1987) Robust Regression & Outlier Detection. Wiley.

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Hawkings & Bradu & Kass data

LinRegOutliers.DataSets.hbk — Constant

Hawkins & Bradu & Kass data

Components

x1::Float64: first independent variable.
x2::Float64: second independent variable.
x3::Float64: third independent variable.
y::Float64: dependent (response) variable.

Reference

Hawkins, D.M., Bradu, D., and Kass, G.V. (1984) Location of several outliers in multiple regression data using elemental sets. Technometrics 26, 197–208.

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Animals data

LinRegOutliers.DataSets.animals — Constant

Animals data

Components

names::AbstractString: names of animals.
body::Float64: body weight in kg.
brain::Float64: brain weight in g.

References

 Venables, W. N. and Ripley, B. D. (1999) _Modern Applied
 Statistics with S-PLUS._ Third Edition. Springer.

 P. J. Rousseeuw and A. M. Leroy (1987) _Robust Regression and
 Outlier Detection._ Wiley, p. 57.

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Weight Loss data

LinRegOutliers.DataSets.weightloss — Constant

Weight loss data

Components

days::Integer: time in days since the start of the diet program.
weight::Float64: weight in kg.

Reference

 Venables, W. N. and Ripley, B. D. (1999) _Modern Applied
 Statistics with S-PLUS._ Third Edition. Springer.

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Stack Loss data

LinRegOutliers.DataSets.stackloss — Constant

Stack loss data

Components

airflow::Float64: flow of cooling air (independent variable).
watertemp::Float64: cooling water inlet temperature (independent variable).
acidcond::Float64: concentration of acid (independent variable).
stackloss::Float64: stack loss (dependent variable).

Outliers

Observations 1, 3, 4, and 21 are outliers.

References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) _The New S Language_.  Wadsworth & Brooks/Cole.

Dodge, Y. (1996) The guinea pig of multiple regression. In: _Robust Statistics, Data Analysis, and Computer Intensive Methods;
In Honor of Peter Huber's 60th Birthday_, 1996, _Lecture Notes in Statistics_ *109*, Springer-Verlag, New York.

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Hadi & Simonoff (1993) random data

LinRegOutliers.DataSets.hs93randomdata — Constant

Hadi & Simonoff (1993) Random data

Components

x1::Float64: Random values.
x2::Float64: Random values.
y::Float64: Random values (independent variable).

Outliers

Observations 1, 2, and 3 are outliers.

References

Hadi, Ali S., and Jeffrey S. Simonoff. "Procedures for the identification of multiple outliers in linear models." Journal of the American Statistical Association 88.424 (1993): 1264-1272.

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