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Statistics
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We use an F test rather than a t test for multi-group studies primarily to

Answer

a.

Avoid calculating standard deviations from the variances.

b.

Be able to use a single formula regardless of differing sample sizes between groups.

c.

Reduce calculation time.

d.

Avoid escalating type 1 error rates.

Jun 5th, 2015

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To avoid escalating type 1 error rates where applicable.

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Jun 5th, 2015

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