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Why do educational researchers usually use the .05 level of significance?

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2009-05-22 04:34:32

According to the electronic textbook StatSoft, "one could

say that the statistical significance of a result tells us

something about the degree to which the result is "true" (in the

sense of being "representative of the population"). More

technically, the value of the p-value represents a decreasing index

of the reliability of a result." A 0.05 level significance is the

standard margin of error recognized in most areas of reseachers,

meaning that probability of error that is involved for most

reseachers is 5% their results.

StatSoft. (1984-2008). Elementary concepts in statistics.

Retrieved 21 May 2009 from

http://www.statsoft.com/textbook/esc.html#index


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