Clin Research Exam 3

in a one-way ANOVA, a p-value of < 0.05 indicates

which is most appropriate for analyzing the relationship between two dichotomous variables

multicollinearity in a multiple regression model:

which method would you use to compare the ranks of three independent groups

which regression method allows for both adding and removing predictors based on criteria

which of the following would best justify the use of logistic regression

what does a significant interaction in a 2x3 ANOVA suggest

which output indicates the proportion of variance in Y explained by all predictors in the model

which test is the nonparametric analog to the independent t-test

what does the coefficient of determination (r^2) tell us

which of the following best describes the key advantage of a paired t-test over an independent t-test

what assumption is unique to ANCOVA beyond the typical parametric assumptions

which regression approach treats each subject as its own trajectory and is useful for nested data

the term standard error in a t-test refers to

in multiple regression, standardized beta weights are particularly helpful because

when is it most important to use a nonparamatic test instead of a parametric test

MANOVA is most appropriate when

a two-way ANOVA reveals a significant interaction but no main effects. what does this mean

in the context of chi-square tests, which of the following would violate a basic assumption of independence

a chi-square test is best applied when

which of the following is NOT an assumption of linear regression

which method is used to reduce family-wise error in post-hoc tests

which correlation is used when one variable is continuous and the other is discontinuous

which correlation method would best suit the relationship between sex (male/female) and MMT score (ordinal)

which technique would you use to reduce a large number of survey items into a smaller set of underlying dimensions

which of the following is most vulnerable to inflated correlations from outliers

which test is used to assess the homogeneity of variance between groups for an independent t-test

the phi coefficient is conceptually similar to

which nonparametric test is conceptually equivalent to a paired t-test

the primary purpose of multiple linear regression is to

if a paired t-test yields a p-value of >0.05 and the CI includes 0, you should

which of the following is NOT a requirement for using parametric test

a researcher finds r=0.03 with p >0.001 in a large sample. Clinically, this suggests

which correlation coefficient is appropriate when both variables are ordinal

which nonparametric test is used for a 1-way repeated measures design

In a simple linear regression, the slop coefficient (b) represents

a significant result in a post-hoc Tukey test after ANOVA tells you

if the p-value for a predictor in a regression model is >alpha (e.g. 0.05) the correct interpretation is

someone uses a one-tailed t-test expecting treatment A to outperform B. What is the main stat consequence if B is better

what is the risk of using multiple t-tests instead of an ANOVA

what is the key difference between r-squared and adjusted r-squares in multiple regression

the strength of a linear association between two continuous variables is best represented by

in repeated measures ANOVA, what is tested by Mauchly's test

why are pragmatic test generally preferred over nonparametric tests when assumptions are met

in the regression equation Y= a + bX, what does "a" represent