Hierarchical Cluster Analysis Quiz

What is the primary goal of hierarchical cluster analysis?

• To create a flat list of objects

• To form a hierarchical tree of objects

• To separate objects into individual points

• To calculate the average of all data points

What is the first step in performing a hierarchical cluster analysis?

• Determine the number of clusters

• Calculate the average distance

• Plot the data points on a scatter plot

• Merge all points into one cluster

Which method calculates the distance as the square root of the sum of squared differences?

• Manhattan distance

• Average distance

• Maximum distance

• Euclidean distance

What does single linkage use to determine the distance between clusters?

• The average of all pairwise distances

• The distance between the most distant elements

• The distance between the closest elements

• The sum of all distances

Which method uses the average of all pairwise distances to determine cluster distance?

• Single linkage

• Complete linkage

• Average linkage

• Maximum linkage

What is the purpose of a distance matrix in hierarchical cluster analysis?

• To merge all clusters into one

• To plot the data points

• To calculate distances between clusters

• To determine the number of clusters

What tool is mentioned for performing hierarchical cluster analysis online?

• DataTab

• ClusterNet

• AnalysisPro

• DataDeep

Which connection method and distance calculation are used in the online demonstration?

• Average linkage and Maximum distance

• Single linkage and Euclidean distance

• Complete linkage and Manhattan distance

• Single linkage and Manhattan distance

What plot is used to determine the number of clusters in the online tool?

• Scatter plot

• Tree plot

• Elbow plot

• Bar plot

What is the significance of the elbow method in cluster analysis?

• To decide the optimal number of clusters

• To calculate the average distance

• To determine the distance between clusters

• To plot the hierarchical tree