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Asked by: nilegarritson-ga
List Price: $2.00
23 Mar 2006 18:54 PST
Expires: 22 Apr 2006 19:54 PDT
Question ID: 711331
I'm studying for a CFA exam right now, and one of the study sessions is about statistics. Specifically, the use of "Table of the Student's t-Distribution for one-tailed probabilities" in the context of performing t-tests. Where does this table come from, and how is it constructed? The textbook says that the table in it was constructed using Excel.
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From: freecomments-ga on 24 Mar 2006 05:05 PST
in excel, tdistribution can be found w/ function: tdist(x, deg_freedom, tails) the "Table of the Student's t-Distribution for one-tailed probabilities" has to do w/hypothesis testing & defining your hypothesis. They give probabilities based on some assumption (this assumption is "degrees of freedom" i.e. # of observations in your expirement). These probabilities define the region of rejection under which you could reject your hypothesis & side with the alternative. But I don't think the CFA exam will ask you TTEST question, regardless of what your study manual is telling you. More likely would be questions on regression analysis & probabilities/Venn Diagrams... NOT hypothesis testing. see:http://www.cas.lancs.ac.uk/glossary_v1.1/hyptest.html see bottom: "one sided test"
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