ANOVA Flashcards

1
Q

ANOVA

A

assessing stat evidence btween 3 or more group means

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2
Q

t tests

A

assessing stat evidence between 2 or less group means

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3
Q

CR-p

A

one-way anova. 1 IV- Dv can be multiple

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4
Q

CRF-pq

A

two-way anova. 2 IV’s. determining interaction

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5
Q

fixed effects model

A

all tx levels included

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6
Q

random effects model

A

only p level of models included

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7
Q

Type 1 error

A

null hypothesis is true and rejected

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8
Q

type 2 error

A

a false hypothesis is not rejected

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9
Q

Increased type 1 error

A

decreased type 2 error and power

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10
Q

increased type 2 error

A

decreased type 1 error, increased power

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11
Q

f stat

A

variability between groups/variability w/in groups

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12
Q

mean 1 = mean 2

A

null

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13
Q

mean 1 does not equal mean 2

A

alternate hypothesis

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14
Q

F stat apa form

A

F(df1,df2)=fstat, P< 0.05

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15
Q

between group effects

A

effects between tx groups have no commonality

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16
Q

trend analysis

A

ordering (ordinal)

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17
Q

regression

A

continious IV and DV

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18
Q

pairwise

A

includes all group means

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19
Q

nonpairwise

A

2 or more, but not all group means

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20
Q

orthogonal

A

product of all coefficients = 0

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21
Q

RM

A

one within. subject recieves all tx levels

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22
Q

subject by treatment

A

order of tx levels is random

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23
Q

subject by trial

A

same order of tx levels

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24
Q

effect size

A

standarized diff of means across groups

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25
CRF-pq
subjects in 1 level of 1st factor & one level of another
26
IV -surface (grass, clay) IV2-stroke (backhand, forehand)
two-between
27
No interaction in two-between
Main effects
28
fixed effects hyptoth
means across all levels of A are =, disregarding B
29
Significant interaction
Simple main effects
30
simple main effects
looks at one factor with levels of another Use pairwise comarisons
31
FMF
two within. each person will have all levels of tx's
32
SPF
1 btwn 1 within, recieve one level of between and all levels of within
33
Post Hoc SPF
only for between effects
34
ANCOVA
analyze effet of IV on DV when controlling for a continous variable
35
Correlation increases
power
36
Which variables are continous in ANCOVA?
DV & cov
37
covariable is reasonably correlated with
DV
38
Effects of training on problem solving when controlling for thinking skills?
covariate
39
ANCOVA pros
decrease error due to covariate, decrease variability that cannot be controlled
40
Bonferroni confidence itnerval adjustment
controls for type 1 error
41
CRF Assumptions
no outliers, homogenity of variance, indepence, normality
42
outlier z-score
remove greater than 2.5
43
levene's
homogeneity of variance
44
violation of homo
welch's
45
shapiro wilkes
normality
46
kruskall wallis
correction for violation of normality & homo
47
Kruskall-wallis APA stat
X^2(DF)= stat, p <0.05
48
Post Hoc Tests with no violatino
LSD, Tukey, Tukey-Kramer, Gabriel, hochbergs, sidak, bonferroni, scheffee, dunnett
49
Post Hoc Tests with violation
Games-Howell, Dunnet's C, Dunnet's T3
50
Greater power, greater type 1 error
liberal post hoc tests
51
RM & RMF assumptions
independece, normal distribution, homogeneity of variance, sphericity
52
sphericity
homo. of variance w/in groups
53
Machley's
test of sphericity
54
P > 0.05 assumptions are good
levene's, shapiro wilkes, mauchley's
55
WHen to use Greenhouse Geiser
if GG is < 0.75
56
Hyn Feldt
if GG is > 0.75
57
Contrasts
polynomial, difference, simple, deviation, helmert, repeated
58
CRF-pq assumptions
homo, normality w/ tx combo, independence, equal SS, sign interaction, tx's are fixed or random
59
SPF assumptions
indenpendent, normal, homo of variance in tx a, sphercity holds, no interaction btwn tx groups & block (btwn factor)
60
ANCOVA assumptions
indepedence, Tx normal, Tx homogenous, x1 and y1 should be related, but not interacted, w/in group regress coefficients are equal, coviariance is w/o error, no interaction between tx & cov
61
are scores different across different subjucts?
CR-p
62
do scores of 1 subject differt between people?
RM
63
what are the effects of paper or electronic test scores when taking math, science or english?
CRF-pq
64
each person will take all tests in each format
RMF
65
Effects of paper or electronic testing while taking 3 different subjects?
SPF