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A test has a true positive rate of 100% and a false-positive rate of 5%. There is a population with a 1/1000 rate of having the condition the test identifies. Considering a positive test, what is the probability of having that condition?
369Post New Data Science Questions
You have two tables-the first table has data about the users and their friends, the second table has data about the users and the pages they have liked. Write an SQL query to make recommendations using pages that your friends liked. The query result should not recommend the pages that have already been liked by a user.
Is macbook good for data science?
Could you explain how to define the number of clusters in a clustering algorithm?
Write a program to segment a long string into a group of valid words using Dictionary. The result should return false if the string cannot be segmented. Also explain about the complexity of the devised solution.
What makes the difference between “long” and “wide” format data?
How is a normal distribution different from chi square distribution?
You created a predictive model of a quantitative outcome variable using multiple regressions. What are the steps you would follow to validate the model?
Write the code to reverse a Linked list.
What is back propagation?
What do you mean by graphics devices in data visualization?
Why is it mandatory to clean a data set?
What is data science with example?
Which language is best for text analytics? R or python?
What is meant by Random Forest Classifier?
what is prior probability and likelihood?
