How can a regression be significant yet all predictors be non-significant? [duplicate]

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My multiple regression analysis model has a statistically significant F value however all beta values are statistically non-significant.

All the regression assumptions are met. No multicollinearity was found. Correlations among all predictors are all less than 0.60.

What else might be the cause of the insignificant predictors?

whuber♦

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asked Aug 19 '11 at 4:50

Serene

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merged by whuber♦ Jan 25 '17 at 19:21

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$\begingroup$ See also here: f-and-t-statistics-in-a-regression, & for a discussion of the opposite case, see here: significant t-test vs non-significant F-statistic. $\endgroup$ – gung♦ Sep 13 '12 at 15:12

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