When analyzing data from experiments that involve more than two groups _________.
a. doing t tests on all possible pairs of means decreases the probability of making Type I errors
b. doing t tests on all possible pairs of means increases the probability of making Type I errors
c. it is generally permissible to do t tests between all possible pairs of means and use Student's t distribution
d. doing t tests on all possible pairs of means increases the probability of making Type II errors
Question 2
A major limitation of a two group design is that _________.
a. we can't run enough subjects
b. very often, two groups are insufficient for a clear interpretation
c. the population parameters may not be applicable
d. the means between groups may not differ
Lake position in the landscape and proportion of water received as groundwater (data from Webster et
Extent of agricultural activity across the planet (data from Foley et al. 2005).
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Selective breeding of maze-bright and maze-dull strains of rats by Tryon (1934). (Data from Cooper, ...
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