Chapter 10: The t Test for Two Independent Samples

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independent measures research

between-subjects; comparing two or more sets of data

repeated measures research

within-subjects

what variance to use with 2 different sized samples?

pooled variance - use to calculate estimated standard error

degrees of freedom

combined for both samples

what is this graph showing?

the probability of a Type I error in a normally distributed sample

what is this graph showing?

the probability of a Type II error in a normally distributed sample

what is this graph showing?

the difference between a one-tailed and two-tailed t-test