Confidence Intervals and Replication: Where Will the Next Mean Fall?

Autor/inn/en	Cumming, Geoff; Maillardet, Robert
Titel	Confidence Intervals and Replication: Where Will the Next Mean Fall?
Quelle	In: Psychological Methods, 11 (2006) 3, S.217-227 (11 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1082-989X
Schlagwörter	Intervals; Misconceptions; Mathematical Concepts; Researchers; Investigations; Statistical Distributions; Sample Size; Robustness (Statistics) + Suchen Sie Ihr Suchwort? Missverständnis; Researcher; Forscher; Untersuchung; Wahrscheinlichkeitsverteilung; Widerstandsfähigkeit
Abstract	Confidence intervals (CIs) give information about replication, but many researchers have misconceptions about this information. One problem is that the percentage of future replication means captured by a particular CI varies markedly, depending on where in relation to the population mean that CI falls. The authors investigated the distribution of this percentage for ? known and unknown, for various sample sizes, and for robust CIs. The distribution has strong negative skew: Most 95% CIs will capture around 90% or more of replication means, but some will capture a much lower proportion. On average, a 95% CI will include just 83.4% of future replication means. The authors present figures designed to assist understanding of what CIs say about replication, and they also extend the discussion to explain how p values give information about replication. (Author).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10