stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
PAMA 5193 - Statistics Review Flashcards | StudBud
Explore
/
PAMA 5193 - Statistics Review
PAMA 5193 - Statistics Review
33 terms
·
StudBud Administration
·
9 plays
Imported from external platform
Flashcards
33 cards
F
Practice quiz
P
Host live
L
Questions
33
Answers
1
If two things are correlated it means that one causes the other.
False
True
2
A two-way ANOVA studies
a single experiment with at least 1 independent and 1 repeated factor
3 or more independent group means
the simultaneous effects of 2 or more independent variables
the correlation among successive measurements of the same individual
3
Which of the following are key concepts for doing a power analysis?
Sample size
Effect size
Covariate
Regression level
Alpha level
Power
4
When analyzing the fit of a simple linear regression, which methods can be used?
Reviewing residuals
Running a t test
Transforming the data
Least squares methods
5
Two-tailed tests say there is a difference between the tested variables and can predict the direction of the difference.
True
False
6
A confidence interval of 95% is wider than one of 99%.
True
False
7
A regression that looks at the contributions of each independent variable sequentially is called a
stepwise multiple regression
logistic regression
nonlinear regression
multi-tier regression
8
When an ANOVA is significant you then run which category of tests to help determine how the means are different?
Post hoc
Lox
T test
Split-plot
9
Nonparametric statistics can be used with nominal and ordinal scales.
True
False
10
An ANOVA is different from a t test in that an ANOVA
requires ordinal data
compares 3 or more means
can only be used for repeated meaures
is nonparametric
11
McNemar test is a form of a Chi-square tests that involves which of the following variables?
Dependent
Regressed
Independent
Correlated
12
Which of the following are assumptions of a parametric test?
Interval scale data
Ratio scale data
Homogenous variances
Nominal scale data
Normal distribution
Unequal distributions
13
Dummy variables code noncontinuous values into continuous ones for stats. What could be data that is coded this way?
Race
Education
Ethnicity
Blood pressure
Urine specific gravity
Gender
14
The ß (beta) value is used for denoting which of the following?
Probability
Type III Error
Type II Error
Type I Error
15
In science we don't "prove" things but rather provide support towards or disprove things.
True
False
16
Which type of test essentially asks "is there a relationship?" in exploratory studies?
Sign test
Dunn's multiple comparison
Chi-square
Paired t test
17
Which of the following are considered to be relatively good values of p and ß when assessing most studies?
20.00
0.050
0.750
0.550
0.200
1.000
18
An ANCOVA combines methods of an ANOVA and a regression to look at confounding variables.
True
False
19
Statistics that examine several response variables within a study and look at potential interrelationships are called
Multiple linear regressions
Many-way ANOVAs
Multivariate analyses
Covariation measures
20
Which of the following is a correlation that can be used for dichotomies?
Point biserial correlation coefficient
Pearson product-moment correlation coefficient
Rank biserial correlation
Kendall's tau-b
Paired t test
Phi coefficient
21
A t test may be paired or unpaired, depending on the experiment conducted.
False
True
22
Which parametric statistical test is used to compare two means?
Wilcoxon test
Mann-Whitney U test
One-way ANOVA
T test
23
Which statistical test is most commonly used, but also often misused?
T test
Regression analysis
ANCOVA
Two-way ANOVA
24
One of the most helpful statistical measures for effective clinical decision making is
Parametric statistics
Mean
Covariates
Regression
25
Correlations ask "is there an association between variables?".
False
True
26
What is sampling error the difference between?
Sample mean and sample standard deviation
Sample mean and population mean
Sample standard deviation and population mean
Population mean and population standard deviation
27
What is known as the likelihood that any one event will occur, given all possible outcomes?
Probability
Logic
Possibility
Inference
28
Which of the following is a type of post hoc test?
Fischer's LSD
Scheffé’s Method
Dunnett’s Correction
Rylen Correlation
Bonferroni Correction
Tukey's HSD
29
Multiple regression is useful when there are several dependent variables to analyze.
True
False
30
Which of the following is true for the R
2
statistic?
How much variation in Y is explained by variance in X.
How much X changes as Y stays the same.
It is also called the coefficient of determination.
It works for linear and non-linear data
31
Which of the following parametric tests is correctly paired with its nonparametric equivalent?
One-way ANOVA - Kruskal-Wallis ANOVA
Independent t test - Mann Whitney U test
Paired t test - Wilcoxon signed-ranks test
One-way ANOVA repeated measures - Friedman two-way ANOVA
32
Chi-squared tests the difference between observed and expected frequencies.
False
True
33
Rejecting the null hypothesis when it is actually true is considered
Covariates
Type II Error
Falsifying Data
Type I Error
