reduction of interferential errors(sig to noise)leading Flashcards
1
Q
Type 1 error
A
reject null when true-setting alpha at 0.05 assures not likely only 0.05% error)
faulse positive
2
Q
type 2 error
A
failing reject null when false- if power test is low its more likely to occur.-(shows how to avoid.)
3
Q
Whats statistical power
A
probability correctly rejecting null
4
Q
power value ranges from
A
0-1
5
Q
higher power value mean
A
greater power and aim 0.8(80%) min.
6
Q
what effects power
A
effect size(larger increase p )-strength of relation between groups- if stronger effect better chance of detecting.
7
Q
what effects power
A
signiifcance level-alpha level chosen
8
Q
what effects power(three more.)
A
sample size-larger better pop estimate and greater power.
choice of test-parametric or non parametric.
choice of experiment- within or between subject groups.
