B) Data understanding and preparation
B) Higher frequency often indicates strong engagement with the healthcare provider.
C) Elbow Method
C) The average spend per transaction for each customer
C) Missed Appointment Rate
B) When future information from the target variable is included in the features
C) Purchase Trend Calculation
B) Use cross-validation and simplify feature complexity
B) Clusters are well-separated and cohesive within themselves
A) Apply feature selection or regularization techniques