The rule that governs degrees of freedom is that A) df = N - 1 B) df = $\Sigma$(X - $\bar { X }$ )² C) df depends on the $\alpha$ level D) df depends on the number of observations minus the number of parameters estimated with statistics.

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df depends on the number of observations minus the number of parameters estimated with statistics.

The Rule That Governs Degrees of Freedom Is That A) Σ\SigmaΣ

The Rule That Governs Degrees of Freedom Is That
A) $\Sigma$