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Data Analysis	2
Evaluation Methods	2
Mathematical Models	2
Research Design	2
Control Groups	1
Experimental Groups	1
Graphs	1
Hypothesis Testing	1
Intervention	1
Multivariate Analysis	1
Research Methodology	1
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Evaluation Review

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Algina, James	1
Bretschneider, Stuart I.	1
Mandell, Marvin B.	1
Olejnik, Stephen F.	1

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Reports - Research	2

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Using Exponential Smoothing to Specify Intervention Models for Interrupted Time Series.

Peer reviewed

Mandell, Marvin B.; Bretschneider, Stuart I. – Evaluation Review, 1984

The authors demonstrate how exponential smoothing can play a role in the identification of the intervention component of an interrupted time-series design model that is analogous to the role that the sample autocorrelation and partial autocorrelation functions serve in the identification of the noise portion of such a model. (Author/BW)

Descriptors: Data Analysis, Evaluation Methods, Graphs, Intervention

Multiple Group Time-Series Design: An Analysis of Data.

Peer reviewed

Algina, James; Olejnik, Stephen F. – Evaluation Review, 1982

A method is presented for analyzing data collected in a multiple group time-series design. This consists of testing linear hypotheses about the experimental and control group-means. Both a multivariate and a univariate procedure are described. (Author/GK)

Descriptors: Control Groups, Data Analysis, Evaluation Methods, Experimental Groups