Question
. Which of the following systems record changes to a file over time ? Record Control B. Version Control C. Forecast Control D. None of the mentioned
0
3 hours 0 Answers 1 views Grand Master

Question
Which of the following approach should be used to ask Data Analysis question ? Find only one solution for particular problem B. Find out the question which is to be answered C. Find out answer from dataset without asking question D. ...
0
3 hours 0 Answers 1 views Grand Master

Question
Which of the following is good way of performing experiments in data science ? Measure variability B. Generalize to the problem C. Have Replication D. All of the Mentioned
0
3 hours 0 Answers 1 views Grand Master

Question
The autocomplete feature: How would you implement it and can you highlight the flaws in this tool today?
0
3 hours 0 Answers 1 views Grand Master

Question
Can you describe a time when you had to steer a client toward a different course of action than the one they were set on taking?
0
4 hours 0 Answers 3 views Grand Master

Question
A client has a Christmas-themed e-commerce shop that sells five items. What are some potential problems you foresee with their revenue streams?
0
4 hours 0 Answers 2 views Grand Master

Question
Company XYZ is an online video streaming company, just like YouTube or Dailymotion.   The Head of Product has identified as a major problem for the site a very high home page drop-off rate. That is, users come to the home-page and ...
0
5 hours 0 Answers 4 views Grand Master

Question
Let’s say that you work at a bank that wants to build a model to detect fraud on the platform. The bank wants to implement a text messaging service in addition that will text customers when the model detects a fraudulent ...
0
6 hours 0 Answers 1 views Grand Master

Question
Write a function to generate an output which lists the pairs of friends with their corresponding timestamps of the friendship beginning and then the timestamp of the friendship ending.
0
6 hours 0 Answers 1 views Grand Master

Question
There are two lists of dictionaries representing friendship beginnings and endings: friends_added and friends_removed. Each dictionary contains the user_ids and created_at time of the friendship beginning /ending .
0
6 hours 0 Answers 1 views Grand Master

Question
We have a table called `song_plays` that tracks each time a user plays a song.Let's say we want to create an aggregate table called `lifetime_plays` that records the song count by date for each user.Write a SQL query that could make this ETL each ...
0
6 hours 0 Answers 1 views Grand Master

Question
Let's say we have a table with an id and name field. The table holds over 100 million rows and we want to sample a random row in the table without throttling the database.Write a query to randomly sample a row from this table.
0
6 hours 0 Answers 2 views Grand Master