Free CompTIA DY0-001 Exam Dumps Questions & Answers

A data scientist is performing a linear regression and wants to construct a model that explains the most variation in the dat a. Which of the following should the data scientist maximize when evaluating the regression performance metrics?

• A.  Accuracy
• B.  AUC
• C.  p value
• D.  R2

An analyst is examining data from an array of temperature sensors and sees that one sensor consistently returns values that are much higher than the values from the other sensors. Which of the following terms best describes this type of error?

• A.  Idiosyncratic
• B.  Heteroskedastic
• C.  Synthetic
• D.  Systematic

Which of the following image data augmentation techniques allows a data scientist to increase the size of a data set?

• A.  Clipping
• B.  Scaling
• C.  Masking
• D.  Cropping

A data analyst is analyzing data and would like to build conceptual associations. Which of the following is the best way to accomplish this task?

• A.  POS
• B.  TF-IDF
• C.  n-grams
• D.  NER

A data scientist is designing a real-time machine-learning model that classifies a user based on initial behavior. The run times of these models are provided in the following table:

Which of the following models should the data scientist recommend for deployment?

• A.  Random forest
• B.  Decision trees
• C.  Artificial neural network
• D.  XGBoost