You are creating a report for user content uploads every month and observe a sudden increase in the number of upload for the month of November. The increase in uploads is particularly in image uploads. What do you think will be the cause for this and how will you test this sudden spike?
202You have a bag with 6 marbles. One marble is white. You reach the bag 100 times. After taking out a marble, it is placed back in the bag. What is the probability of drawing a white marble at least once?
193Suppose that American Express has 1 million card members along with their transaction details. They also have 10,000 restaurants and 1000 food coupons. Suggest a method which can be used to pass the food coupons to users given that some users have already received the food coupons so far.
171You are given a training dataset of users that contain their demographic details, the pages on Facebook they have liked so far and results of psychology test based on their personality i.e. their openness to like FB pages or not. How will you predict the age, gender and other demographics of unseen data?
193Burn two ropes, one needs 60 minutes of time to burn and the other needs 30 minutes of time. How will you achieve this in 45 minutes of time ?
197How can you build and test a metric to compare ranked list of TV shows or Movies for two Netflix users?
393How do you take millions of users with 100's of transactions each, amongst 10000's of products and group the users together in a meaningful segments?
286Post New Data Science Questions
What do you understand by decision tree?
What is the definition of the unit test?
What is the difference between kmeans clustering and hierarchical clustering?
What is the difference between a cluster and systematic sampling?
What skills do I need to be a data scientist?
A stranger uses a search engine to find something and you do not know anything about the person. How will you design an algorithm to determine what the stranger is looking for just after he/she types few characters in the search box?
Can you explain unsupervised learning?
What jupyter used?
Define boltzmann machine
Why do you want to work as a data scientist?
What Is An Avl Tree?
What is the difference between supervised learning an unsupervised learning?
How do data scientists use statistics?
What is the job of a data scientist?
Explain data munging?
