Online Data Science & Analytics Test

Topics covered

Introduction to Data Science, Data Visualization
Machine Learning Techniques using R
Analytics with R & other Tools
Exploratory Data Analysis
Data Manipulation using R
Introduction to Statistics
Regression Analysis

  • MAQ (Multiple Answer Question)
  • MCQ (Multiple Choice Question)
  • Descriptive Question
  • White Board Simulator
  • Coding Simulator
  • Audio Question
  • Video Question
  • Case Study Question

Data Science is an interdisciplinary field of processes and systems to extract knowledge or insights from data in various forms which includes data analysis fields such as statistics, machine learning, and predictive analysis. It is designed to check the analytics and data science methods. Data Science includes methods and theories from different verticals like mathematics, information science, computer science & statistics.

Online data science test helps recruiters and hiring managers to assess analytical and data interpretation skills of the candidate. Interview Mocha’s aptitude test for data scientists is created & validated by experienced subject matter experts (SMEs) to assess & hire data scientists as per industry standards.
Data scientist interview test helps you to screen the candidates who possess traits as follows:

1.  Excellent skills while handling R data manipulation
2.  Analytics with R tools & machine learning techniques
3.  Understanding of linear and  non-linear regression models
4.  Strong knowledge of different statistical concepts
5.  Ability to perform exploratory data analysis & regression analysis 

Interview Mocha’s powerful reporting & intelligent analytics will help you overview candidate’s performance in each section within a glance. Candidate feedback module will ensure candidates are having excellent experience with Interview Mocha.

Job skill aptitude test for data scientist contains latest & quality set of questions crafted by industry experts to cope with recent developments in technology. Moreover, you can add your own questions as per the job requirement.

This pre-employment test is useful for hiring:
  • Data Scientists
  • Data Science Engineer
  • Data Science Developer
  • Data Science Associate

Test details:

Data scientist interview test will evaluate a candidate’s practical knowledge and will identify whether the candidate is ready to be employed. Data science assessment test can be taken by the candidate from anywhere in the comfort of their time zone.

Data science skills assessment test may contain MCQ's (Multiple Choice Questions), MAQ's (Multiple Answer Questions), Fill in the Blank, Descriptive, Whiteboard Questions, Audio / Video Questions, True or False.

Duration: 20 minutes 
20 Application Questions

Data Science & Analytics Test

Question #1 of 3

Suppose I want to extract the first column of each matrix in the list. How I can do that?

    • zapply(x, function(elt) { elt[,1] })

    • lapply(x, function(elt) { elt[,1] })

    • extract(x, function(elt) { elt[,1] })

Question #2 of 3

I need to save the plot to PDF file, what should I do?

    • Construct the plot on the screen device and then copy it to a PDF file with dev.copy2pdf()

    • Open the screen device with quartz(), construct the plot, and then close the device with

    • Open the PostScript device with postscript(), construct the plot, then close the device with dev.copy2pdf().

    • None of the mentioned

Question #3 of 3

What does the summaryRprof() function do?

    • tabulates the R profiler output and calculates how much time is spent in the first function

    • tabulates the R profiler output and calculates how much time is spend in which function

    • tabulates the R profiler output and calculates how much time is spend in all functions

Candidate Name
Assessment Name
Invited by
Assessment Date
IP Address

24.00 Out of 40.00
23 Minutes

Java EE




Oracle PL/SQL


Analytical Thinking


Note:If score<= 30% then its a Weakness. If score >=70% then its a Strength.


Java EE, Oracle PL/SQL, Analytical Thinking




It was a good test for me, the questions were on the latest technology of java on which I am currently working. It was a great experience. Thank you!

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