Building a histogram of post reply count in SQL (number of posts with x replies, x+1 replies, etc). Building a table with a summary of feature usage per user every day (keep track of the last action by user and roll that up every day). Basic conditional probabilities (check out brilliant.org for their source of inspiration)
Flip one coin 10 times and obtain one H, what is the p value and null hypothesis?
You randomly draw a coin from 100 coins - 1 unfair coin (head-head), 99 fair coins (head-tail) and roll it 10 times. If the result is 10 heads, whats the probability that the coin is unfair?
Have you ever worked from home or online before.
almost evrything on java ,DBMS.
As a part of a bigger question: "How do you draw a uniform random sample from a circle in polar coordinates?"
If you give N riders with the probability of P a $5 coupon, what is the expected coupon spend
You have a google app and you make a change. How do you test if a metric has increased or not?
How would you measure the health of Mentions, Facebook's app for celebrities? How can FB determine if it's worth it to keep using it? If a celebrity starts to use Mentions and begins interacting with their fans more, what part of the increase can be attributed to a celebrity using Mentions, and what part is just a celebrity wanting to get more involved in fan engagement?
how did you analyze data? Who uses your data analysis results? how large is the data set you work with? sql question one: the first table is customer purchase table, with five columns, customer id, purchase date, product id, unit price, unit purchased, write queries to retrieve data with unique customer id that made over $100 purchase in the past seven days. sql question two: a second table is the customer details table, with two columns, customer id, registration date, write queries to retrieve data with unique customer id that made over $100 purchase who registered in the past ten days. probability question: what is the probability of generating ten consecutive numbers in ascending order out of 100 numbers? this is a random number generation question.
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