Which of the following methods should a data scientist use just before switching to a potential replacement model?
A data scientist is presenting the recommendations from a monthslong modeling and experiment process to the company's Chief Executive Officer. Which of the following is the best set of artifacts to include in the presentation?
A data scientist is developing a model to predict the outcome of a vote for a national mascot. The choice is between tigers and lions. The full data set represents feedback from individuals representing 17 professions and 12 different locations. The following rank aggregation represents 80% of the data set:Which of the following is the most likely concern about the model's ability to predict the outcome of the vote?
A data scientist is working with a data set that covers a two-year period for a large number of machines. The data set contains:Machine system ID numbers -Sensor measurement values -Daily time stamps for each machineThe data scientist needs to plot the total measurements from all the machines over the entire time period. Which of the following is the best way to present this data?
A data scientist has built an image recognition model that distinguishes cars from trucks. The data scientist now wants to measure the rate at which the model correctly identifies a car as a car versus when it misidentifies a truck as a car. Which of the following would best convey this information?
A data analyst wants to generate the most data using tables from a database. Which of the following is the best way to accomplish this objective?
