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The use of grafted polynomials and dummy variables in analyzing time series data
Author(s) -
Coffman David A.,
Clark James A.
Publication year - 1978
Publication title -
journal of clinical psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.124
H-Index - 119
eISSN - 1097-4679
pISSN - 0021-9762
DOI - 10.1002/1097-4679(197804)34:2<420::aid-jclp2270340235>3.0.co;2-h
Subject(s) - series (stratigraphy) , psychology , operant conditioning , regression analysis , statistics , reinforcement , regression , variation (astronomy) , data series , statistical analysis , time series , mathematics , econometrics , social psychology , paleontology , physics , astrophysics , biology
Describes an innovative statistical method for analyzing single‐ S time series data. The S and data in the paper were selected from a larger study which applied operant conditioning to ambulation problems of severely handicapped patients and used positive verbal reinforcement. The method described is a variation of traditional multiple regression analysis described elsewhere as “grafted polynomials” (Draper & Smith, 1967; Fuller, Note 1). An extensive explanation of the use of dummy variables also is provided.