Multivariate Data Analysis Questions
and Answers Grade A+ 2023
Multivariate Data Analysis - -deals with statistical analysis of observations where there are
multiple responses on each observational unit
-a single variable - -MDA models reality where each situation, product, or decision involves
more than _____
-process the information in a meaningful fashion - -Multivariate Analysis can be used to ___
-1. Consumer and market research
2. Quality control and assurance
3. Process optimization and process control
4. Research and development - -Uses of MVDA
-Principle Component Analysis/Factor Analysis - -obtain a summary or an overview of a table
identify the dominant patterns in the data such as groups, outliers, trends, and so on
-Principal Component Analysis - -a class of procedures used for data reduction and
summarization
-interdependence technique - -PCA is an _____: no distinction between dependent and
independent variables
-1. to identify underlying dimensions, or factors, that explain the correlations among a set of
variables
2. to identify a new, smaller, set of uncorrelated variables to replace the original set of correlated
variables - -Uses of Factor Analysis
-Bartlett's test of sphericity - -is used to test the hypothesis that the variables are uncorrelated in
the population
-Correlation Matrix - -is a lower triangle matrix showing the simple correlations between all
possible pairs of variables included in the analysis
-1 - -diagonal element are all ___
-Communality - -amount of variance a variable shares with all the other variables
-Eigenvalue - -represents the total variance explained by each factor
-Factor loadings - -correlations between the variables and the factors
and Answers Grade A+ 2023
Multivariate Data Analysis - -deals with statistical analysis of observations where there are
multiple responses on each observational unit
-a single variable - -MDA models reality where each situation, product, or decision involves
more than _____
-process the information in a meaningful fashion - -Multivariate Analysis can be used to ___
-1. Consumer and market research
2. Quality control and assurance
3. Process optimization and process control
4. Research and development - -Uses of MVDA
-Principle Component Analysis/Factor Analysis - -obtain a summary or an overview of a table
identify the dominant patterns in the data such as groups, outliers, trends, and so on
-Principal Component Analysis - -a class of procedures used for data reduction and
summarization
-interdependence technique - -PCA is an _____: no distinction between dependent and
independent variables
-1. to identify underlying dimensions, or factors, that explain the correlations among a set of
variables
2. to identify a new, smaller, set of uncorrelated variables to replace the original set of correlated
variables - -Uses of Factor Analysis
-Bartlett's test of sphericity - -is used to test the hypothesis that the variables are uncorrelated in
the population
-Correlation Matrix - -is a lower triangle matrix showing the simple correlations between all
possible pairs of variables included in the analysis
-1 - -diagonal element are all ___
-Communality - -amount of variance a variable shares with all the other variables
-Eigenvalue - -represents the total variance explained by each factor
-Factor loadings - -correlations between the variables and the factors
