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Big Picture Review of stats 2 Flashcards | StudBud
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Big Picture Review of stats 2
Big Picture Review of stats 2
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Questions
30
Answers
1
A study design with 1 IV of continous data and 1 Dv of continous data would be a test of:
moderation
regression
correlation
mediation
2
If ANOVA test outputs (F) are not significant then we do not perform post hoc test.
False
True
3
The correlation between an IV and moderator (W) should be ___.
1.0
aprx -1.0
0
aprx 1.0
4
read the vignette and decide on the variable type
nominal variable
independent variable for a field study
ndependent variable for a quasi-experiment
dependent variable
5
The nonparametric test of correlations include (select all that apply)
Mann-Whitney U
Kendall’s Tau
Spearman rho
Shapiro Wilks
Kruskal-Wallis
Wilcoxon sum- rank test
6
Covariance assumptions include (select all that apply)
Independence of scores
Heteroscedasticity
Normal distribution
Independence of errors
Linearity
Homoscedasticity
7
normality testing for t-tests include
Liliford
Shapiro wilk: W test statistic
Welch test
Anderson Darling
8
a design with a nominal IV and continous DV would be associated with
regression
t-tests
correlation
ANOVA
9
ANCOVA supports a nominal I.V. ; it also supports Covariate and DV that are both
continuous
categorical
extraneous
nominal
10
normality testing for t-tests include
Shapiro wilk: W test statistic
Welch test
Anderson Darling
Liliford
11
T-tests and ANOVAs test the null hypothesis that means are same
True
False
12
Correlation *pearson r* assumptions include (select all that apply)
Independence of errors
Independence of scores
Heteroscedasticity
Linearity
Homoscedasticity
Normal distribution
13
ANCOVA assumptions include (select all that apply)
HOV
Linearity
Normal distribution
heteroscedasticity
Hom. of Reg. Slopes
Independence between IV and Cv
14
Lets say your study is appropriate for running a 2-factor ANOVA, when do we analyze main effects?
NA
when the AXB interaction is not significant
NA
when the AXB interaction is significant
15
Like t-tests and ANOVA, _____ also tests group means with the addition of a __; this lets us analyze variance and __.
ANCOVA, covariate, make predictions.
ANCOVA, mediator, make predictions.
3 way ANOVA, moderator, fit a model.
2 way ANOVA, moderator, fit a model.
16
Goodness of Fit tests if frequencies differ btwn categories of ___. χ2 Test of Association tests relationship btwn __.
1 categorical variable, 2 nominal variables.
2 nominal variable, 2 nominal variables.
1 nominal variable, 3 nominal variables.
1 nominal variable, 2 nominal variables.
17
t-test assumptions are (select 4)
independence of scores
normal distribution
Linearity
Homoscedasticity
independence of errors
HOV
18
Modetrators (W) are ____ variables like age, race, SES, trauma history....
NA
categorical
NA
continuous
19
The following tests all require a categorical IV (select all that apply)
ANCOVA
one way ANOVA
Chi sqaured
repeated measures ANOVA
t-test
Factorial ANOVA (2 way and 3 way)
20
Levenes test is a normality testing method for
correlations
t-tests
correlations
Levenes test is not used for normality assessment
21
The correlation between an IV and moderator (W) should be ___.
aprx -1.0
0
aprx 1.0
1.0
22
The null hypothesis for a t-test is that
the covariance of groups (our sample and population) differ
the means of groups (our sample and population) are the same
the means of groups (our sample and population) differ
the variances of groups (our sample and population) are the same
23
Covariance tests the relationship between 2 continuous variables in standardized/z-score form.
True
False
24
Lets say your study is appropriate for running a 2-factor ANOVA, when do we analyze simple effects?
NA
NA
when the AXB interaction is significant
when the AXB interaction is not significant
25
A study design with 1 categorical IV with 2 levels and 1 continuous DV would use a___.
correlation
ANOVA
T-test
ANCOVA
26
ANOVA has (select which apply)
IV: categorical DV: continuous
Test-statistic: T statistic and P value
Test-statistic: F statistic and P value
IV: continous DV:continuous
27
ANOVA _____ support continous IV and DV.
can
NA
NA
cannot
28
If normality is violated due to Levenes test producing a significant p-value for t-tests, we use the robust method of...
Wilcoxon sum- rank test
Shapiro wilk
Kruskal-Wallis
Welch’s test
29
Lets say your study is appropriate for running a 2-factor ANOVA, once we analyze effects (either main or simple) we then
determine if the effect (regardless of being main/simple) is significant
analyze group comparisons
NA
analyze the AXB interaction for significance
30
Correlation tests the relationship between 2 continuous variables in raw/unstandardized-score form.
True
False
