AN 300 -Exam 2 Questions with Correct Answers 100% Verified Which of the following is true about cluster analysis? Check all that apply.-It is a descriptive analytics technique -It is to discover associations between objects.-It is used to discover natural groupings of objects.-It is to answer what has happened questions.-It is a descriptive analytics method.-It is to answer what could happen questions. - Correct Answer -It is a descriptive analytics technique.-It is used to discover natural groupings of objects.-It is to answer what has happened questions.Which of the following is a characteristic of a cluster analysis problem? (Check all that apply): -The data that describes the object must be given.-Its objective is to maximize similarities of objects between groups.-The data on group memberships must be given.-It is about how to discover -It is about how to organize objects into groups.-Its objective is to maximize similarities of objects within groups. - Correct 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?-Manhattan coefficient -Correlation coefficient -Euclidean distance -Matching coefficient -Straight line distance - Correct Answer -Euclidean distance 1 / 2
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?-Correlation coefficient -Matching coefficient -Straight line distance -Manhattan coefficient -Euclidean distance - Correct Answer -Matching coefficient Match the description on the left with the measure to use on the right.-It is the length of a straight line between two objects. - Correct Answer Euclidian Distance It requires replacing the raw value of data with its z-score. - Correct Answer Euclidian Distance The lower the measure the better - Correct Answer Euclidian Distance It is for categorical Data - Correct Answer Matching Coefficient It is a ratio of number of columns with matching categorical values to the total number of categorical columns. - Correct Answer Matching Coefficient Which of the following is a business application of cluster analysis?-Affinity analysis -Outlier detection -Market basket analysis -Sentiment analysis - Correct Answer -Outlier detection Match the situation on the left with the clustering method on the right.-You have 300 rows of data. - Correct Answer Hierarchical Clustering You only have numerical data to work with. - Correct Answer K-Means Clustering You have outliers in the data. - Correct Answer K-Means Clustering
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