stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Data Analysis Flashcards | StudBud
Explore
/
Data Analysis
Data Analysis
55 terms
·
StudBud Administration
·
8 plays
Imported from external platform
Flashcards
55 cards
F
Practice quiz
P
Host live
L
Questions
55
Answers
1
Frage 20: A unit de-/increase in satisfaction increases the
... increase ... the probability of recommendation by 82%
... increase ... the probability of recommendation by 60%
... increase ... the odds of recommendation by 82%
... decrease ... the odds of recommendation by 40%
2
Frage 4
A
D
C
B
3
A partial correlation analysis is used when:
At least one of the variables is not continuous
A third variable is associated with two other variables
Variables of independent groups are correlated
A control variable is unrelated with two focal variables
4
Validity in the measurement of a variable cannot be influenced by systematic error, if random error is zero.
True
False
5
Statistical power is the opposite of the probability making a Type 1 error
True
False
6
With 99% confidence level, when would it be correct to not reject the null hypothesis H
0
?
When the resulting test has a p < 0.01
When the resulting test has a p > 0.01
7
Logistic regression is special in that it can:
Test for group differences
Include categorical covariates
Predict group membership
Control for a third variable
8
Frage 6
Independent samples t-tests
One way ANOVA
Paired samples t-test
Chi square test
9
Frage 56
False
True
10
Frage 14
Simple regression analysis
Factorial ANOVA
ANCOVA
Partial correlation analysis
11
Frage 1
Fail to reject the null hypothesis, making a Type 2 error
Reject the null hypothesis, finding a true positive effect
Reject the null hypothesis, making a Type 1 error
12
Frage 23
Chi2 test
Independent samples t-test
Paired samples t-test
One way ANOVA
13
Other things being equal, as the sample size increases, the effect size also Increases.
False
True
14
Post hoc test in ANOVA are applied to:
Test which groups differ in terms of their variance
Test which groups are equal regarding the independent variable
Test for homogeneity of variance
Test which groups differ on the dependent value
15
Frage 31
True
False
16
A careful examination of the standardized residuals in regression analysis CANNOT be used to identify:
Outliers
Normality of errors
Heteroscedasticity
Multicollinearity
17
Frage 35
True
False
18
Logistic regression is special in that it can:
Test for group differences
Control for a third variable
Include binary predictors
Predict group membership
19
Post-hoc tests in ANOVA are applied to:
Test which groups are equal regarding the independent variable
Test for homogeneity of variance
Test which groups differ in the dependent variable
Test whether the variances across groups are different
20
Frage 49
True
False
21
Frage 5
Expert testimonials decrease ad effectiveness & is true in pop
Expert testimonials beat celebs in sample but not in pop
Expert testimonials beat celebrity endorsements & is true in pop
Celebrity endorsements no effect in sample but effective in pop
22
Frage 56
False
True
23
Frage 48
False
True
24
Frage 39
True
False
25
Frage 3
A
D
C
B
26
Frage 45
True
False
27
Other things being equal, the size of the population increases the statistical power of a test.
False
True
28
What information is provided by the R
2
squared correlation coefficient?
The partial correlation
The amount of shared variance
Only (A) and (C) are correct
The spread of the data
29
Frage 22: Thomas concludes from his sample that celebrity advertising ....
... has a neg effect in sales which is also true to the pop
... has a pos effect on sales when in the pop it does not
... has no effect on sales when in the population it does
... has a pos effect on sales when this effect is also true in the pop
30
Frage 15
Perceived product prestige eliminates the influence of ethnocentrism
The effect of ethnocentrism weakens as perceived product prestige increases
Ethnocentrism eliminates the influence of perceived product prestige
Perceived product prestige enhances the influence of ethnocentrism
31
Validity is the measurement of a variable that cannot be influenced by systematic error, if random error is zero.
False
True
32
The standard error of a statistic will always be smaller than its standard deviation.
False
True
33
Frage 51
False
True
34
Which of the following statistics will more likely be affected the LEAST by the inclusion or exclusion of an outlier?
Mode
Mean
Standard diviation
Variance
35
Frage 16
It is an experimental hypothesis
It is an exploratory hypothesis
It is not falsifiable
It implies a one tailed test
36
The p-value of a test indicates how likely it is that the results we obtained are due to chance.
False
True
37
What information is provided by the squared correlation coefficient R
2
?
(A) and (C) are correct
The spread of the data
The partial correlation
The amount of shared variance
38
With 99% confidence level, when would it be correct to not reject the null hypothesis H
0
?
When the resulting test has a p < 0.05
When the resulting test has a p > 0.05
39
Frage 9
Paired samples t-test
Independent samples t-test
One way ANOVA
Chi squared test
40
Frage 55
True
False
41
Which of the following measurement scales cannot have the property of a natural rank order?
Ratio
Ordinal
Interval
Nominal
42
Frage 17: A unit increase in satisfaction increases...
The odds of recommendation by 0.50
The odds of recommendation by 70%
The probability of recommendation by 50%
The probability of recommendation by 70%
43
Frage 42
False
True
44
Frage 40
True
False
45
The standard deviation is a measure of how well a given statistic (e.g mean) represents the sample.
True
False
46
Cronbach’s alpha is useful to:
Test the internal consistency of multi-items measures
Evaluate the association between dependent and independent variables
Test causality between related variables
Evaluate heteroscedasticity
47
Frage 27
Multiple logistic regression analysis
Factorial ANOVA
Multiple regression analysis
ANCOVA
48
Frage 52
Agree
Disagree
49
Cronbach’s alpha is useful to:
Test the internal consistency (i.e. reliability) of multi-item measures
Compare independent groups on a continuous scale
Test causality between variables
Evaluate the association between a dependent and an independent variable
50
Frage 30
True
False
51
Frage 50
False
True
52
Frage 41
False
True
53
With 99% confidence level, when would it be correct to not reject the null hypothesis H
0
?
When the resulting test has a p > 0.05
When the resulting test has a p < 0.01
54
The statistical power of a test does not depend on the effect size.
False
True
55
Other things being equal, the 99% confidence interval (CI) for an estimate in a given sample will be:
Narrower than the 95% CI
Wider than the 95% CI
