9.19 EBDM Statistical Inference and Tests Flashcards
rejecting the null hypothesis when the null hypothesis is true
type 1 error
not rejecting the null hypothesis when the null hypothesis is false
type 2 error
a false positive study result (incorrectly rejecting the null hypothesis) is a type ___ error
1
a false negative study result (should have rejected null hypothesis but didn’t) is a type ____ error
2
when the p-value is ______, it is less likely the groups being studied are the same
small
a paired T-test or two sample T-test compares ______ of two groups. what does it tell you?
means
if the means are reliably different
a T-test analyzes _______ data and a chi-squared test analysis _______ variables
continuous
categorical
what is “power”?
the probability of finding a difference between groups if one truly exists
_______ is the percentage chance that you will be ale to reject H0 if it is really false
power
power = ___ - ____
1- beta (probability you will make a type two
error)
power ________ as you increase sample size
increase
