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A sentiment analysis on restaurant reviews is not producing meaningful results.  The team notices that words like “was,” “from,” and “what” appear frequently but do not contribute much to the analysis.  What preprocessing step should they consider?

What is the primary goal of a classification model in machine learning?

A video streaming platform notices a decline in subscriber numbers and wants to take preemptive action.  To do this, they need a model that can predict whether customers will renew or cancel their subscription based on their level of engagement.   What machine learning technique should they use?

A retail store collects feedback from customers by asking them to describe their shopping experience using phrases like “friendly,” “rushed,” or “disorganized.”  This type of data is best classified as:

A hospital records patient information, including names, birthdates, diagnoses, and medications, in an electronic health record (EHR) system that uses a relational database. What type of data is this?

A logistics company tracks deliveries using an Excel spreadsheet with columns for tracking number, destination, and delivery date.  What type of data is this?

An energy company measures household energy usage in kilowatt-hours (e.g. 15.75 kWh) to optimize electricity production.  This data is best classified as:

A pharmaceutical company stores research reports as PDF files containing experiment details and results.  These reports are used in clinical trials.  What type of data is this?

Which of the following is the most accurate definition of lymphedema?

Which type of exercise is generally recommended for patients with systemic lupus erythematosus (SLE) during physical therapy?