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?
190You 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?
184Suppose 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.
163You 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?
183Burn 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 ?
186How can you build and test a metric to compare ranked list of TV shows or Movies for two Netflix users?
376How 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?
277Post New Data Science Questions
What is the jupyter center ?
How would you say data science is similar or different to business analytics and business intelligence?
Define a sql query?
Explain the differences between univariate and multivariate analysis?
What is k-means? How can you select k for k-means?
How does data cleaning plays a vital role in the analysis?
Name some packages in r and python for building regression models.
How do data management procedures like missing data handling make selection bias worse?
Define boltzmann machine
How do you check for data quality?
What is meant by classical ANOVA?
What are distance measures in R statistics?
How do you use goal seek in excel?
What are Type 1 and Type 2 errors ?
Which one would you prefer for text analytics python or r?
