AN 300 UKY Exam #2 fully
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accuracy(guaranteed pass)
Cluster analysis is a __________________ technique - answer Descriptive
analytics
Cluster analysis is used to discover - answer Natural groupings of
objects
Cluster analysis is used to answer what ________________ questions -
answer HAS happened
Characteristics of cluster analysis problems - answer - The data that
describes the object must be given
- It is about how to organize objects into groups
- Its objective is to maximize similarities of objects within groups
You have data on the weight and height of patients. Which similarity
measure should be used to calculate how similar a group of patients
is to one another? - answer Euclidean
You have data on the gender and income levels of customers. Which
similarity measure should be used to calculate how similar a group
of customers is to one another? - answer Matching coefficient
It is the length of a straight line between two objects. - answer
Euclidean
, It requires replacing the raw value of data with its z-score. - answer
Euclidean
The lower the measure the better. - answer Euclidean
It is for categorical data. - answer Matching coefficient
It is a ratio of number of columns with matching categorical values
to the total number of categorical columns. - answer Matching
coefficient
Business applications for cluster analysis - answer - Divide
customers into homogenous groups for target MARKETING
- Divide clients into homogenous groups for personalized FINANCIAL
advice
- Identify outliers for quality control (OPERATIONS)
Distance based cluster analysis methods... - answer Hierarchical
clustering and k-means clustering
You have 300 rows of data. - answer Hierarchical
You only have numerical data to work with. - answer K-Means
You have outliers in the data. - answer K-Means
You want to experiment with different ways to calculate the
distance between clusters. - answer Hierarchical
CCC is related to the proportion of _____________ in the data
accounted for by the clusters - answer Variance
solved & verified for
accuracy(guaranteed pass)
Cluster analysis is a __________________ technique - answer Descriptive
analytics
Cluster analysis is used to discover - answer Natural groupings of
objects
Cluster analysis is used to answer what ________________ questions -
answer HAS happened
Characteristics of cluster analysis problems - answer - The data that
describes the object must be given
- It is about how to organize objects into groups
- Its objective is to maximize similarities of objects within groups
You have data on the weight and height of patients. Which similarity
measure should be used to calculate how similar a group of patients
is to one another? - answer Euclidean
You have data on the gender and income levels of customers. Which
similarity measure should be used to calculate how similar a group
of customers is to one another? - answer Matching coefficient
It is the length of a straight line between two objects. - answer
Euclidean
, It requires replacing the raw value of data with its z-score. - answer
Euclidean
The lower the measure the better. - answer Euclidean
It is for categorical data. - answer Matching coefficient
It is a ratio of number of columns with matching categorical values
to the total number of categorical columns. - answer Matching
coefficient
Business applications for cluster analysis - answer - Divide
customers into homogenous groups for target MARKETING
- Divide clients into homogenous groups for personalized FINANCIAL
advice
- Identify outliers for quality control (OPERATIONS)
Distance based cluster analysis methods... - answer Hierarchical
clustering and k-means clustering
You have 300 rows of data. - answer Hierarchical
You only have numerical data to work with. - answer K-Means
You have outliers in the data. - answer K-Means
You want to experiment with different ways to calculate the
distance between clusters. - answer Hierarchical
CCC is related to the proportion of _____________ in the data
accounted for by the clusters - answer Variance
