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Exam (elaborations)
MATH 425 exam 2 all answers correct
MATH 425 exam 2 all answers correct 
Unsupervised learning methods are needed when... data only contains features and no label 
What are some of the possible goals within unsupervised learning framework? One possible goal 
within the unsupervised learning framework is to discover interesting things about the data that you are 
working with. This includes questions such as "Are there any subgroups among the observations or 
variables that we can discover?", and "Do you notice any hi...
Exam (elaborations)
Math 425 - Exam 2 All Answers Correct
PopularMath 425 - Exam 2 All Answers Correct 
40% of students at a school have brown hair, 25% own a red car (these are independent events). from a 
group of 2 students, we know that at least one of them has brown hair and owns a car. what is the 
probability that both own a car? 
What kind of problem is this and how do you solve it? 
What operation do you perform for independent events? Conditional Probability, use multiplication 
with independent events 
Solution: Draw a diagram that shows co...