Dsci 100 final exam - Study guides, Class notes & Summaries

Underfitting in classification - correct answer Increased number of neighbours means that more observations are influencing the classification. This smooths out the boundaries between each class, so the model isn't influenced enough by the training data. Underfitting in KNN regression - correct answer Increased K values means that more observations are influencing the regression line, which can cause the line to beco...

Early in the class we had discussed risk. Which option below is most accurate? a. Risk cannot be defined, but is used as a general idea when talking about danger. b. Baseline risk concerns the inevitable collisions in baseball between the runners and basemen. c. Risk must always be about safety, and not ever death. d. Risk is defined as likelihood, and is interchangeable with the term, "likelihood". e. Risk is defined as chance, and is interchangeable with the term, "chance". f. Risk ...

Which of the following is a constant hazard rate? - correct answer Exponential distribution Recall our in-class discussion regarding order statistics. Suppose you are working for Sunflower Outfitters, a store that sells Kansas clothing and offers a credit card to customers that can be used anywhere VISA is accepted. Wanda, one of your customers, has used her Sunflower Outfitters Card four times since opening it, with her last use of the credit card being at t = 0.77. Your supervisor wants y...

DSCI 725 Final Exam With Questions And 100% ALL SURE ANSWERS