p-value
define what a p-value is
- the probability that all the samples tested are the same
- the null hypothesis is true
what is hypothesis testing used for
determining if our experimental treatment had an effect
first step after data is collected
add up ranks from each participant
range of a p-value
0-1
simplest test to test the difference between two means
t-test
table to look up critical difference
Table F.J
if a p-value is lower
represents a higher statistical difference
one-tailed t-test
alternative hypothesis is directional
two-tailed test
alternative hypothesis does not state a direction