Univariate Bivariate Multivariate - Youngstown State University
[Pages:4]Overview
Analysis Strategy
Univariate (One variable)
Bivariate (Two variables)
Multivariate (> 2 variables)
1
Overview
Univariate (One variable)
Continuous Variable
Categorical Variable
Central Tendancy
Variation
Distribution
Plots
Frequencies
Plots
Mean
(C.I., t-test, Signed Rank test)
Median
(Signed Rank test)
Mode
Variance
Standard Deviation
Range
Percentiles
Interquartile Range
Normal (Normality test) Uniform
Histogram Box Plot
Exponential
...
(Goodness of fit test for testing distribution)
Stem Plot
Dot Plot
Line Chart
Time Series Plot
Counts
Bar Graph
Frequencies Pie Graph
Odds
Pareto
Graph
Percentages
(C.I.,
z-test for proportion,
Goodness of Fit test,
Binomial test)
For paired sample design, t-test and signed rank test can be used to test for the mean of the paired differences. In this case, the one variable is the paired difference.
2
Overview
Categorical Y Categorical X
Bivariate (Two variables X & Y)
Continuous Y Categorical X
Continuous Y Continuous X
Y-2 Categories X-2 Categories
Pearson's Chi-square
Fisher's Exact
McNemar's Test
Y or X are > 2 categories
Y-Normal X-2 Categories
Y-Normal X>2 Categories
Pearson's Chi-square
MantelHaenszel
Y-Non-normal X-2 Categories
Y-Non-normal X>2 Categories
2 Independent Samples t-test
Paired-Sample Test (related samples)
Wilcoxon One-way Rank-sum ANOVA
Signed-rank Test (related samples)
KruskalWallis Test
Y and X Normal
Y or X Non-normal
Scatter plot
Simple Linear Regression
Pearson's Correlation
Spearman's Correlation
Y = Dependent, Outcome, or Response Variable; X = Independent variable, Explanatory variable
3
Overview
Multivariate (More than two variables)
Continuous Y
Dichotomous Y
Nominal Y > 2 Categories
Multiple Regression
Analysis of Variance
Analysis of Covariance
Logistic Regression
Discriminant Analysis
Multinomial Logistic
Ordinal Y
Ordinal Logistic
Y is "Time" Survival Analysis
Multivariate Y
Life Table
Cox Proportional Hazards Model
Repeated Measures
MANOVA
Factor Analysis
Y = Dependent, Outcome, or Response Variable; X = Independent variable, Explanatory variable
4
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