Data Interview Questions

Data Scientist

Interviewed at FICO

3.8★

Sep 21, 2016

What is a distribution you may use to model data whose range of input values is [0, N]?

Data Scientics

Interviewed at Automatic

3.6★

Sep 21, 2016

that they'd never seen someone do machine learning from the ground up in 6 hours. At least I know the basicas

Data Scientics

Interviewed at Automatic

3.6★

Sep 21, 2016

what are the possible approaches, why did you take yours?

Data Architect

Interviewed at Nationstar Mortgage

3★

Dec 1, 2016

How can you add value to our IT department?

Data Engineer

Interviewed at Zenefits

3.8★

Dec 4, 2016

Find a path through a 2D matrix.

Data Entry Clerk

Interviewed at New York Safety Program

Oct 18, 2016

What is your greatest weakness?

Data Entry Clerk

Interviewed at New York Safety Program

Oct 18, 2016

What would your family and friends say is your best asset?

Data Entry/Administrative Assistant

Interviewed at Nexus Technologies

3.8★

Oct 6, 2016

Do you have the knowledge on how to use Spread Sheet, Excel and General Microsoft Office tools?

Data Manager

Interviewed at Intercept Pharmaceuticals

3★

Oct 18, 2016

Hi, I have seen you profile and it looks very interesting. You have been Data manager and then SAS programmer. Tell why do you want to come back to data management?

Big Data Consultant

Interviewed at Prowareness

3.8★

Mar 3, 2017

Spark : 1. Difference between map and flatmap. 2. Difference between groupbykey and reducebykey 3. Which file format spark saves file ? Answer should be ".orc" files only. (It took me multiple attempts to understand the question. and ".txt", ".csv" "xml" "anyflat-file-format" is not the correct answer. LOL ) 4. Difference between coalesce and repartition. 5. some more questions on RDD Hive 1 Difference between orderby and sortby 2. Select * from . How many mapper will be created. 3. Analytical function/ What is RANK ? hdfs 1. Difference between block and split SQL 1. What is indexing on single column ? (stopped in between of my answer ) and followed by what is sorting type in index key ascending or descending. (How does it matter its primary key not composite key) 2. Can you have two primary key . (I do not thing there will need of two primary as one it self does the job.) No tell the implementation is it possible, can you define two primary key ? (No) One of the panel member got irritated and fired a few questions after saying bye and answering my question related to profile and position . (Literally like Panel one : okay bye thanks for you ... Panel: No I will ask one last question . which file format spark saves files. )