Stats Ch10 Definitions
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a research design that uses a separate sample for each treatment condition/each population is called an ________-____________ research design, or a ___________-___________ design.
Independent-measures t statistic formula differs from single-sample test (Ch9) in that
the independent-measures t is basically a two-sample t that doubles all the elements of the single-sample t formulas.
i-m t = sample mean difference - pop mean difference / estimated standard error
(M1-M2) - (m1 - m2) / s(M1-M2)
Independent-measures t statistic uses a new formula for estimated standard error, which is
s(M1-M2) = square root of (s21 / n1) + (s22 / n2)
basic information containted in t
t= data - hypothesis / error
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