power analysis (part2)

Question 1

RECAP=stat sig

Answer 1

p smaller 0.05- unlikely by chance as under 5 percent error rate they being relation
(only then reject null)

Question 2

RECAP-type 1 error

Answer 2

faulse positive
reject null when true

Question 3

type 2

Answer 3

faulse negative
accept null when faulse

Question 4

statistical higher power (1-b)

Answer 4

higher chance detect true relation

Question 5

power set

Answer 5

.8- 80 percent correctly reject null minimum

Question 6

graphs( small overlap)

Answer 6

reject null ( show little relation= sog difference

Question 7

graph( large overlap)

Answer 7

accept null

Question 8

what overlap mean in power

Answer 8

indicate low power
-small prob reject null correctly

Question 9

what does power depend on (5)

Answer 9

sample size-larger reduce error- easy increase power
size of effect-large effect easy detect
variation sample-less variation increase power
measure error-higher measure=low power
sig level-increase sig- increase power indicated

Question 10

whats effect size