Comparisons , Post Hoc and FWE Flashcards

1
Q

What term is given to the fact that the F value shows an overall difference or not, rather than individual differences between levels
A megabus F B Multibus F C omnibus F D none of the above

A

C- Omnibus F

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2
Q

A priori comparisons are based on _____________

A

planned, expected or predicted differences

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3
Q

Post Hoc comparisons are thought of __________ data collection

A

After

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4
Q

Psi refers to what?
A contrasts B differences C comparisons D similarities

A

A contrasts

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5
Q

The greek Psi =

A

CM

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6
Q

Because the degrees of freedom is always ____ for comparisons, the MSA1,A2 =_____________

A

DF always 1, so MSA1A2=SSA1A2

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7
Q

FA1A2 =_____________/__________

A

MSA1A2/MSR = Variance between/variance within

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8
Q

Family wise error refers to the ______________

A

Accumulation of type 1 error when running multiple comparisons

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9
Q

FWER =

A

1-(1-a)^m

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10
Q

Unlike post hoc comparisons, planned comparisons do not need to ______________

A

account for familywise error

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11
Q

What is the strictest of the post hoc tests
A Tukey HSD test B scheffe test C bonferroni correction D they are all strict

A

C bonferroni correction

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12
Q

The scheffe test adjusts the critical F based on the number of ______________

A

treatment levels

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13
Q

The Tukey HSD test uses the _____________________________(SRDQ), and can only be applied when treatment group sizes are_______

A

Studentized range distribution Q , only when groups are equal

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