Podcast
Questions and Answers
What technique is used for grouping individuals or objects into unknown groups in cluster analysis?
What technique is used for grouping individuals or objects into unknown groups in cluster analysis?
Which diagram is recommended before performing clustering to display the main characteristics of underlying clusters?
Which diagram is recommended before performing clustering to display the main characteristics of underlying clusters?
What is a helpful technique for a moderate number of variables in cluster analysis?
What is a helpful technique for a moderate number of variables in cluster analysis?
Which distance measure is commonly used in clustering based on distances between observations and clusters?
Which distance measure is commonly used in clustering based on distances between observations and clusters?
Signup and view all the answers
In cluster analysis, what type of data checking is advisable due to sensitivity to outliers?
In cluster analysis, what type of data checking is advisable due to sensitivity to outliers?
Signup and view all the answers
What can yield different clusters in cluster analysis?
What can yield different clusters in cluster analysis?
Signup and view all the answers
What is the purpose of the centroid method in clustering?
What is the purpose of the centroid method in clustering?
Signup and view all the answers
In clustering, what does a large increase in distance in the dendrogram indicate?
In clustering, what does a large increase in distance in the dendrogram indicate?
Signup and view all the answers
Why might it be desirable to perform principal components analysis or factor analysis before clustering?
Why might it be desirable to perform principal components analysis or factor analysis before clustering?
Signup and view all the answers
What is a common approach to evaluate clustering results when different runs produce varying outputs?
What is a common approach to evaluate clustering results when different runs produce varying outputs?
Signup and view all the answers
Why is it recommended to split data and run clustering on both halves to see if they yield similar results?
Why is it recommended to split data and run clustering on both halves to see if they yield similar results?
Signup and view all the answers
What is a key aspect to consider when trying different clustering methods and number of clusters?
What is a key aspect to consider when trying different clustering methods and number of clusters?
Signup and view all the answers
What is the purpose of standardizing variables in clustering when they have different units of measurement?
What is the purpose of standardizing variables in clustering when they have different units of measurement?
Signup and view all the answers
In hierarchical clustering, what happens in each successive step in agglomerative methods?
In hierarchical clustering, what happens in each successive step in agglomerative methods?
Signup and view all the answers
What is the key concept behind the centroid method in agglomerative hierarchical clustering?
What is the key concept behind the centroid method in agglomerative hierarchical clustering?
Signup and view all the answers
What is the primary approach used to split clusters in divisive hierarchical methods?
What is the primary approach used to split clusters in divisive hierarchical methods?
Signup and view all the answers
Why might hierarchical procedures mislead investigators in clustering analysis?
Why might hierarchical procedures mislead investigators in clustering analysis?
Signup and view all the answers
What is considered an important issue when performing clustering analysis?
What is considered an important issue when performing clustering analysis?
Signup and view all the answers
