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Why the .05 Significance Level?

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Why do educational researchers usually use the .05 level of significance and what does this mean? Please also provide an example.

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Why educational researchers usually use the .05 level of significance and what it means.

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Significance levels tell you just how likely a result is due to chance. The most common level is .95 and means that the finding has a 95% chance of being true. In contrast, it also means that the finding has a five percent (.05) chance, or 5 out of 100, of not being true. Not to mention that if you took a totally random set of data and conducted 100 ...

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