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Wolters Kluwer Data Science Intern Interview Questions and Answers
Wolters Kluwer Data Science Intern Interview Experiences
1 interview found
Anonymous
I applied via Referral and was interviewed in Dec 2023. There was 1 interview round.
(7 Questions)
- Q1. Tell me about yourself
- Q2. Tell me in details about your project. (Mainly the python related project)
- Q3. Which ML algorithm did you use in your project?
- Ans.
I used the Random Forest algorithm in my project.
Random Forest is an ensemble learning method that combines multiple decision trees to make predictions.
It is used for both classification and regression tasks.
Random Forest reduces overfitting and provides feature importance.
Example: I used Random Forest to predict customer churn in a telecom company.
- Q4. What is Sql? And what is a database?
- Ans.
SQL is a programming language used for managing and manipulating relational databases. A database is a structured collection of data.
SQL is used to retrieve, insert, update, and delete data from a database.
A database is a software system that stores and organizes data in a structured manner.
SQL allows users to define the structure of a database, create tables, and establish relationships between tables.
Examples of data
- Q5. What do you understand by joins in sql?
- Ans.
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
Joins are used to retrieve data from multiple tables in a single query.
Common types of joins include inner join, left join, right join, and full outer join.
Joins are performed using the JOIN keyword and specifying the columns to join on.
Joins can be used to combine tables based on matching values or non-matching values.
...
- Q6. Apply join in the above tables (Table was provided by the interviewer)
- Q7. How many squares are their in a chess box? (Aptitude question)
Interview Preparation Tips
- Python
- Machine Learning
- Natural Language Processing
- MySQL
- Algorithms
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
I applied via Campus Placement and was interviewed in Mar 2021. There was 0 interview round.
Interview Preparation Tips
I was interviewed in Feb 2017.
Interview Questionnaire
4 Questions
- Q1. Everything related to previous projects.
- Q2. Normalization of database to BCNF
- Ans.
Normalization to BCNF ensures that every non-trivial functional dependency is satisfied.
Identify all functional dependencies
Eliminate partial dependencies
Eliminate transitive dependencies
Ensure every determinant is a candidate key
- Q3. Difference between 'having' clause and 'where' clause in MySQL
- Ans.
HAVING clause is used with GROUP BY to filter groups, WHERE clause is used to filter rows.
HAVING clause is used with GROUP BY clause to filter groups based on aggregate functions.
WHERE clause is used to filter rows based on conditions.
HAVING clause is used after GROUP BY clause, while WHERE clause is used before GROUP BY clause.
HAVING clause can use aggregate functions, while WHERE clause cannot.
Example: SELECT categor...
- Q4. DBMS queries
Interview Preparation Tips
Experience: It was 1-to-1 interview where I was asked about the previous projects first. They have asked everything about the project, from why we chose the technology we chose and how we implemented it.
Tips: Can't give much tips as I have not faced many interviews myself, but as far as internship interviews go, they require candidates who are willing to learn. You don't need to convince them that you know everything, as the basic understanding of the subject and willingness to learn will do just fine.
Round: Test
Duration: 20 minutes
Total Questions: 25
College Name: PDPM IIITDM, Jabalpur
Skills evaluated in this interview
amboxavatar
I applied via Referral and was interviewed before Jun 2020. There were 3 interview rounds.
Interview Questionnaire
3 Questions
- Q1. Asked me to create a PowerPoint on how would I help the sales team with the selling pitch
- Q2. Asked me to write an email summarizing my findings from the selling pitch deck
- Q3. Guesstimate - how many flights are handled by Bangalore airport on a daily basis
- Ans.
Around 600 flights are handled by Bangalore airport on a daily basis.
Bangalore airport is one of the busiest airports in India
It handles both domestic and international flights
On average, there are around 25-30 flights per hour
The number of flights may vary depending on the day of the week and time of the year
Interview Preparation Tips
I applied via Campus Placement and was interviewed in Jun 2024. There were 3 interview rounds.
It is quite easy.topics like train speed and time , profit loss and work hour energy problems
Coding will be based on DSA .In depth graphs and trees would been asked
(4 Questions)
- Q1. Given a question regarding patterns
- Q2. Explain about os
- Q3. Some SQL commands
- Q4. Explain system calls
Interview Preparation Tips
- DSA
- SQL
Selected
I applied via Campus Placement and was interviewed before Mar 2023. There were 5 interview rounds.
Basic math problems and English related questions
Write a program to give out the final score in a cricket match where number of deliveries will be the input and in a ball a batsman ca score either 1,0 or 2.
(2 Questions)
- Q1. Write a program to separate strong for special characters
- Ans.
Program to separate strong for special characters in an array of strings
Iterate through each string in the array
For each string, iterate through each character
Check if the character is a special character and separate it into a new string if it is
- Q2. General question about personal projects
(2 Questions)
- Q1. Questions about OOPs concept
- Q2. What is Function overloading and overriding?
- Ans.
Function overloading is having multiple functions with the same name but different parameters. Function overriding is redefining a function in a subclass.
Function overloading allows multiple functions with the same name but different parameters.
Function overriding involves redefining a function in a subclass with the same name and parameters as in the superclass.
Example of function overloading: int add(int a, int b) an...
(1 Question)
- Q1. General question on extra activities in the resume
Skills evaluated in this interview
Selected
Learn and study about Aptitude like Quantitative aptitude, verbal and reasoning. Practice more and attend more mock test
(1 Question)
- Q1. What is SQL ? What are the market trend
- Ans.
SQL is a programming language used for managing and manipulating relational databases.
SQL stands for Structured Query Language.
It is used to communicate with and manipulate databases.
SQL can be used to create, modify, and retrieve data from databases.
It is widely used in data analysis and data management roles.
Some popular relational database management systems that use SQL include MySQL, Oracle, and SQL Server.
Skills evaluated in this interview
1 hr,Maximal Sqauare problem,Apti questions
(1 Question)
- Q1. Technical questions of OOPs
I applied via Campus Placement and was interviewed in May 2024. There were 2 interview rounds.
It was easy to moderate.
This round was very tough.
Interview Preparation Tips
Selected
I applied via Naukri.com and was interviewed in Jun 2023. There were 3 interview rounds.
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Interview Preparation Tips
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