Psych 313 QTP CH. 6

Question 1

What is a Type 1 error?

Answer 1

the probability of finding a significant result (statistically) when there is not a true significant difference between your groups

example: A person is diagnosed with a medical condition they do not have.

Question 2

What is a Type 2 error?

Answer 2

The probability of not finding a
significant result (statistically) when a true
significant difference should emerge in your
study.

example: a test for a disease may report a negative result when the patient is infected.

Question 3

what is the percentage of confidence you need to have in your findings?

Answer 3

95% or higher, (p value of .05 or less)

Question 4

what is a post hoc examination?

Answer 4

a statistical analysis specified after a study has been concluded and the data collected. A post-hoc test is done to identify exactly which groups differ from each other

Question 5

what is a planned comparison?

Answer 5

a comparison between two or more quantities that is planned before data is collected.

Question 6

what are two groups called in experiments with one independent variable?

Answer 6

t-test

Question 7

what are 3 or more groups called in experiments with one independent variable?

Answer 7

one way ANOVA