9.19 EBDM Statistical Inference and Tests Flashcards Preview

Foundations Exam 3 > 9.19 EBDM Statistical Inference and Tests > Flashcards

Flashcards in 9.19 EBDM Statistical Inference and Tests Deck (11):
1

rejecting the null hypothesis when the null hypothesis is true

type 1 error

2

not rejecting the null hypothesis when the null hypothesis is false

type 2 error

3

a false positive study result (incorrectly rejecting the null hypothesis) is a type ___ error

1

4

a false negative study result (should have rejected null hypothesis but didn't) is a type ____ error

2

5

when the p-value is ______, it is less likely the groups being studied are the same

small

6

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

7

a T-test analyzes _______ data and a chi-squared test analysis _______ variables

continuous
categorical

8

what is "power"?

the probability of finding a difference between groups if one truly exists

9

_______ is the percentage chance that you will be ale to reject H0 if it is really false

power

10

power = ___ - ____

1- beta (probability you will make a type two
error)

11

power ________ as you increase sample size

increase