Final Exam Slides Flashcards
The t-test is a test about
means
what is the question t-tests are answering
are two means different from one another
the t-test is a derivative of what
z-test
the t-test uses the estimate of what instead of the true standard error
standard error of the mean
t-test are what?
parametric
what does parametric mean?
they carry an assumption of normality in their dataset
when you want to compare a sample mean to some known or hypothesized value
one-sample test
the question are lilies in your garden larger on average than the horticultural standard is what one kind of t-test
one-sample test
if you want to compare two groups to one another
independent samples t-test
if you want to see how a group changes over time you use a
repeated measures t-test
the question , is there a difference between male and female scores on a dexterity test, uses what test
independent samples t-test
pre post test is what
repeated measures t-test
do freshman biology student grades increase after tutoring uses what test
repeated measures t-test
in one sample t-test the samples must be what kind of data
interval or ratio (quantitative/ scalar)
the samples in a one sample t-test must approximate a
normal curve
do you know the true standard error of the mean in a one sample t-test
no
what can you estimate one sample t-test with the
sample standard deviation
what are the degrees of freedom in a one-sample t-test
n-1
in independent samples t-test must be what kind of data
interval and ratio
the samples in an independent samples t-test approximate a
normal curve
is the independent samples t-test robust to violations and if so when
when each group has n that is larger than 10
degrees of freedom for independent samples t-test is
n-2
the vairance of the samples in independent samples t-test is
similar
