JOBSEEKER?

Data Science Test

TestDome skill assessments are used by more than 7,000 companies and 450,000 individual test takers.

For Jobseekers

Practice your skills and earn a certificate of achievement when you score in the top 25%.

Take a Practice Test

For Companies

Test how candidates think, strategize, and problem solve so you can interview the best.

Sign Up to Offer This Test

TestDome Skill Assessments

Used by over 450,000 jobseekers

Trusted by over 7,000 companies

Premium questions with real-world problems

The Data Science test assesses a candidate’s ability to analyze data, extract information, suggest conclusions, and support decision-making, as well as their ability to take advantage of Python and its data science libraries such as NumPy, Pandas, or SciPy.

It's the ideal test for pre-employment screening. Data scientists and data analysts who use Python for their tasks should be able to  leverage the functionality provided by Python data science libraries to extract and analyze knowledge and insights from data.

This test requires candidates to demonstrate their ability to apply probability and statistics when solving data science problems and to write programs using Python for the same purpose.

TestDome is trusted by businesses large and small

We’re top rated for our tests’ quality and reasonable completion time

Take The Test
Practice your skills.
Offer This Test
Sign up for a trial plan.
Free Sample Questions for General and Python Data Science Test

Our sample questions are free for companies to use on a trial plan. See more about our premium questions for paid plans below.

Pet Detection

5min
  -  
Easy  
  -  
NUM

General Data Science Confusion matrix Machine learning Public

A classifier that predicts if an image contains only a cat, a dog, or a llama produced the following confusion matrix:

  True values    
Dog Cat Llama
Predicted values     Dog 14 2 1
Cat 2 12 3
Llama 5 2 19

What is the accuracy of the model, in percentages?

Petri Dish

5min
  -  
Easy  
  -  
MMCQ

General Data Science Correlation Public

Two bacteria cultures, A and B, were set up in two different dishes, each covering 50% of its dish. Over 20 days, bacteria A's percentage of coverage increased to 70% and bacteria B's percentage of coverage reduced to 40%:

Petri Dish

Login Table

15min
  -  
Easy  
  -  
CODE

Python Data Science Pandas Public New

A company stores login data and password hashes in two different containers:

  • DataFrame with columns: Id, Login, Verified.
  • Two-dimensional NumPy array where each element is an array that contains: Id and Password.

Elements on the same row/index have the same Id.

Implement the function login_table that accepts these two containers and modifies id_name_verified DataFrame in-place, so that:

  • The Verified column should be removed.
  • The password from NumPy array should be added as the last column with the name "Password" to DataFrame.

For example, the following code snippet:

id_name_verified = pd.DataFrame([[1, "JohnDoe", True], [2, "AnnFranklin", False]], columns=["Id", "Login", "Verified"])
id_password = np.array([[1, 987340123], [2, 187031122]], np.int32)
login_table(id_name_verified, id_password)
print(id_name_verified)

Should print:

   Id        Login   Password
0   1      JohnDoe  987340123
1   2  AnnFranklin  187031122
Take The Test
Practice your skills.
View Test Pricing
Pick the number of tests you need.
Pass/fail grouping

Our tests are designed to put candidates into either the pass group or the fail group so you can find the best candidates faster.

Full customization

We have pre-built tests and questions, but you can customize them however you like. Change the pass/fail scores, time requirements, and more.

Cheating protection

Use tests that solve real-world problems, with no answers that can be easily found online. Because we test performance and skills (not information), we allow the use of online resources, just like in real life. Copy/paste prevention and online proctoring via webcam prevent cheating.

Candidate reporting

Get an overview into the percentage of passes and fails. Then dive deeper into the results of your top candidates to select who goes onto the next phase of hiring.

Learn more
In-depth candidate performance analysis
Offer This Test
Sign up for a trial plan.

Premium Questions for General and Python Data Science Test

TestDome offers a premium questions library with 1000+ unique, hand-crafted questions whose answers can’t be found online. If you spot an answer somewhere online, we’ll give you a refund.

Question Names

These premium questions are included in this pre-built test and can be added to any multi-skill test. Please sign up for a paid plan to view the questions in detail.

Class Grades, Age and Earnings, Credit Score, CTR, Distribution Fitting, Median Height, Clean CSV, Birthday Cards, Free Throws, Bacterial Growth, Cubic Approximation, Distribution of Answers, Bank Loan, Hiring Process, Billiard Club Occupancy, Cheating Indicator, Credit Wizard, Patient Classification, Rain, Subscribers, Wine Quality
Covered Skills

Testing of these skills is covered in this pre-built test because they’re closely related. On our paid plan, you can easily create your own custom multi-skill tests.

Python Data Science Grouping NumPy Pandas General Data Science Linear regression Classification k-nearest neighbors Machine learning Scikit-learn Binomial distribution Probability p-value Cauchy distribution Exponential distribution Normal distribution SciPy Data cleaning Processing CSV Sorting Data aggregation Curve Fitting Nonlinear regression Probability distributions Decision tree Outliers Bayes' theorem Decision boundary ROC Poisson distribution Correlation Multicollinearity
Recommended Job Roles

These are the job roles that we recommend for the General and Python Data Science online test.

Data Analyst
Data Scientist
Statistician

Take or Offer the General and Python Data Science Online Test

How TestDome works

1. Choose or create a test
2. Share your test via URL or email
3. Review overall results and pass/fail grouping
4. Dive deeper into individual results

Excellent support & free concierge service

We offer fast, hands-on support for any question or concern you might have. If you want help with building a custom test or inviting candidates, we’ll handle everything for you.

Contact Support for any questions or to request our free concierge service.

Excellent support

Take or Offer the General and Python Data Science Online Test

Dashboard Start Trial Sign In Home Tour Tests Questions Pricing For Jobseekers