Data Analyst Intern Interview Questions

Additional Situational Interview Questions For Data Analysts

Data Analysts Interview Questions

In this article

• Data Analytics Interview FAQs

Interviewing as a data analyst is a skill unto itself. The unfortunate truth is that its possible to be a very good data professional but have a tough time answering the questions lobbed at you by hiring managers. At the same time, you should be encouraged knowing that you can quickly learn how to give all the right answers in the interview room.

Weve compiled a list of the most common data analyst technical interview questions to make your life easier. Use this as a kind of playbook to understand the data analysis themes that are covered in interviews and how you can deliver concise accurate answers.

What Scripting Languages Have You Used In Your Projects As A Data Analyst Which One You Youd Say You Like Best

How to Answer

Most large companies work with numerous scripting languages. So, a good command of more than one is definitely a plus. Nevertheless, if you arent well familiar with the main language used by the company you apply at, you can still make a good impression. Demonstrate enthusiasm to expand your knowledge, and point out that your fluency in other scripting languages gives you a solid foundation for learning new ones.

Example Answer

Im most confident in using SQL, since thats the language Ive worked with throughout my Data Analyst experience. I also have a basic understanding of Python and have recently enrolled in a Python Programming course to sharpen my skills. So far, Ive discovered that my expertise in SQL helps me advance in Python with ease.

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More Behavioral Interview Questions For Data Analysts

Whats Your Experience In Giving Presentations To Various Audiences

Communication is a very important skill as a data analyst, and that includes being able to give strong presentations. Employers are looking for candidates who have great analytical skills and the confidence to present their findings in an eloquent and easy-to-understand way to upper-level management and non-technical co-workers. When answering this question, make sure to mention the following:

• Size of the audience you presented to
• Who was in the audience
• The general knowledge the audience had
• If the presentation was in person or remote.

Potential Answer:

“Ive presented to various audiences. Some were smaller with many upper-level management and executives present, while others were larger and included coworkers and clients that had different knowledge backgrounds. The largest presentation was around 50 people. All of these presentations were done in person, except for a one-on-one zoom call with the CEO.

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We Have Two Options For Serving Ads Within Newsfeed: 1

For the questions 1: I think both options have the same expected value of 4For the question 2: Use binomial distribution function. So basically, for one case to happen, you will use this functionp = ^99*^1In total, there are 100 positions for the ad. 100 * p = 7.03%Less

For “MockInterview dot co”:The binomial part is correct but you argue that the expected value for option 2 is not 4 but this is false. In both cases E = np = 100* = 4 and E = np=100* = 4 again.Less

Chance of getting exactly one add is ~7% As the formula is ^K * ^ where the first is the combination number N over KLess

How Do You Treat Outliers In A Dataset

An outlier is a data point that is distant from other similar points. They may be due to variability in the measurement or may indicate experimental errors.

The graph depicted below shows there are three outliers in the dataset.

To deal with outliers, you can use the following four methods:

• Drop the outlier records
• Try a new transformation

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Whats The Largest Data Set Youve Worked With

What theyâre really asking: Can you handle large data sets?

Many businesses have more data at their disposal than ever before. Hiring managers want to know that you can work with large, complex data sets. Focus your answer on the size and type of data. How many entries and variables did you work with? What types of data were in the set?

The experience you highlight doesn’t have to come from a job. Youâll often have the chance to work with data sets of varying sizes and types as a part of a data analysis course, bootcamp, certificate program, or degree. As you put together a portfolio, you may also complete some independent projects where you find and analyze a data set. All of this is valid material to build your answer.

Interviewer might also ask:

Learn at your own pace

Skills you’ll build:

Spreadsheet, Data Cleansing, Data Analysis, Data Visualization , SQL, Questioning, Decision-Making, Problem Solving, Metadata, Data Collection, Data Ethics, Sample Size Determination, Data Integrity, Data Calculations, Data Aggregation, Tableau Software, Presentation, R Programming, R Markdown, Rstudio, Job portfolio, case study

Q10 What Is The Difference Between Nvl And Nvl2 Functions In Sql

NVL and NVL2 are functions which check whether the value of exp1 is null or not.

If we use NVL function, then if exp1 is not null, then the value of exp1 will be returned else the value of exp2 will be returned. But, exp2 must be of the same data type of exp1.

Similarly, if we use NVL2 function, then if exp1 is not null, exp2 will be returned, else the value of exp3 will be returned.

If you wish to know more questions on SQL, then refer a full-fledged article on SQL Interview Questions.

Now, moving onto the next set of questions asked i.e. the Tableau Interview Questions.

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Top 50 Data Analyst Interview Questions And Answers In 2022

Go through these top data analyst interview questions with answers which help you grab your dream job. Data analysis is one of the most integral parts of the tech revolution. This has paved a clear path to a data analysts role, being among the top 10 jobs of this decade. In this, you will learn what is data analysis, data validation, and data mining.

Data Science Internship Interview Questions

Data science is an attractive field because not only is it lucrative, but you can have opportunities to work on interesting projects, and youre always learning new things. If you’re trying to get started from the ground up, then review this guide to prepare for the interview essentials.

By Jay Feng, Head of Data Science and Co-Founder Interview Query.

Data science is an attractive field. Its lucrative, you get opportunities to work on interesting projects, and youre always learning new things. Hence, breaking into the world of data science is extremely competitive. One of the best ways to start your data science career is through a data science internship.

In this article, well look at the general level of knowledge thats required, the components of a typical interview process, and some example interview questions. Note that the term general is emphasized because the specifics differ company by company.

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What Tools Do You Consider The Most Important For A Business Analyst To Do Their Job Well

This question allows an interviewer to test your basic technical skills and familiarity with standard business analytics applications as well as those they may use at the company. BAs commonly use tools like the Microsoft Office Suite, though you may have used other tools or programs in your work. Tailor your answer to highlight your own unique experience and skills.

Example:”I commonly use tools like Word, Excel, PowerPoint, MS Visio and Rational tools. I also have advanced SQL skillsusing SQL is helpful when I need to analyze items like customer purchases that would overwhelm Excel.”

Which Step Of A Data Analysis Project Do You Like The Most

Do know that it is completely normal to have a predilection toward certain tools and tasks over others. However, while performing data analysis, you will always be expected to deal with the entirety of the analytics life cycle, so make sure not to speak negatively about any of the tools or of the steps in the process of data analysis.

Finally, in this interview questions for the Data Analysts blog, we have to understand how to carefully approach this question and answer it to the best of our ability.

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Can You Please Explain How You Would Estimate The Number Of Visitors To The Taj Mahal In November 2019

This is a classic behavioral question. This is to check your thought process without making use of computers or any sort of dataset. You can begin your answer using the below template:

First, I would gather some data. To start with, Id like to find out the population of Agra, where the Taj Mahal is located. The next thing I would take a look at is the number of tourists that came to visit the site during that time. This is followed by the average length of their stay that can be further analyzed by considering factors such as age, gender, and income, and the number of vacation days and bank holidays there are in India. I would also go about analyzing any sort of data available from the local tourist offices.

Why Do You Want To Become A Data Analyst

This question helps in understanding your motivation and reason for choosing a data analysis career. So, carefully explain your interests and passion in this field.

Example:âData analytics is a fast-paced career requiring a professional to think and solve new business problems critically. Since my childhood, I am extremely good with numbers. Also, I believe every data has a story to tell and a problem to solve, which I find fascinating. I chose this role because it encompasses skills I am good at. I find collecting, organising and analysing data interesting.â

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Explain How You Would Estimate

What theyâre really asking: Whatâs your thought process? Are you an analytical thinker?

With this type of question , the interviewer presents you with a problem to solve. How would you estimate the best month to offer a discount on shoes? How would you estimate the weekly profit of your favorite restaurant?

The purpose here is to evaluate your ability to problem solve and your overall comfort working with numbers. Since this is about how you think, think out loud as you work through your answer.

• What types of data would you need?

• Where might you find that data?

• Once you have the data, how would you use it to calculate an estimate?

Intellipaats Data Science Courses

• What are some recommended data science courses by Intellipaat?

Intellipaat has collaborated with top-rated institutions to bring you several Data Science programs tailored to individuals and professionals who wish to become successful Data Scientists. Here are a few recommended courses that you may find is suitable for you:

• Advanced Certification in Data Science and AI by CCE, IIT Madras
• PG certification in Data Science and Machine Learning by MNIT, Jaipur
• Masters in Data Science online program
• Data Science online course

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What Is The Significance Of Exploratory Data Analysis

• Exploratory data analysis helps to understand the data better.
• It helps you obtain confidence in your data to a point where youre ready to engage a machine learning algorithm.
• It allows you to refine your selection of feature variables that will be used later for model building.
• You can discover hidden trends and insights from the data.

Q5 What Is The Difference Between Univariate Bivariate And Multivariate Analysis

The differences between univariate, bivariate and multivariate analysis are as follows:

• Univariate: A descriptive statistical technique that can be differentiated based on the count of variables involved at a given instance of time.
• Bivariate: This analysis is used to find the difference between two variables at a time.
• Multivariate: The study of more than two variables is nothing but multivariate analysis. This analysis is used to understand the effect of variables on the responses.

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Is Coding Required To Learn Data Science

Sometimes. While it is not necessary to have advanced coding skills, it is good if learners are comfortable with data analytics, data management, and data visualization.

Fundamental knowledge in C/C++, Python, R, Java, or SQL can boost your learning process. Learning any of these programming languages would serve you in grouping the unstructured datasets.

What Kind Of Projects Are Included As Part Of The Training

Intellipaat is offering you the most updated, relevant, and high-value real-world projects as part of the training program. This way, you can implement the learning that you have acquired in real-world industry setup. All training comes with multiple projects that thoroughly test your skills, learning, and practical knowledge, making you completely industry-ready.

You will work on highly exciting projects in the domains of high technology, ecommerce, marketing, sales, networking, banking, insurance, etc. After completing the projects successfully, your skills will be equal to 6 months of rigorous industry experience.

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What Tools Or Software Do You Prefer Using In The Various Phases Of Data Analysis And Why

How to Answer

Although you might think you should have experience with as many tools as possible to ace this question, this is not the case. Each company uses specific data analysis tools, so its normal that your expertise is limited to those. Of course, if you have worked for a large number of companies, youre bound to have exposure to a wider variety of analytical software. That said, the interviewer would like to know which tools you feel comfortable with, rather than the number of tools youve utilized.

Example Answer

When it comes to data analysis tools, I can say Im a traditionalist. Thats why, I find Microsoft Excel and Microsoft Access most useful. I feel truly comfortable working with those, and theyre available in almost every company out there. Moreover, you can achieve great results with them with the right training.

Whats Your Favourite Tool For Data Analysisyour Likes Dislikes And Why What Querying Languages Do You Know

Danielle says: For this question, Its important you detail your Excel skills, which are an integral part of performing data analysis. Prove your Excel credentials, outlining any courses youve been on or examples of analysis youve performed with the program. Employers will also want to know what querying languages youre familiar with, whether it be SAS, R, Python or another language. Querying languages are used for larger sets of data, so youll need to prove you have a solid foundation in one of these languages. Heres a top tip: try and find out what querying language the company youre applying to uses, that might come in handy!

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Have You Previously Used Quantitative And Qualitative Data Within The Same Project Tell Us About It

Using both quantitative and qualitative data within a project is important to gain a full understanding of the project. When answering this question, talk about the project that required the most creative thinking.

Potential Answer:

Ive had a few projects where I had access to qualitative survey data, but I realized that I can enhance the validity of my recommendations by implementing data from external survey sources as well. When I combined the two types of data together in a product development project, it yielded great results.

Explain The Knn Imputation Method In Brief

KNN is the method that requires the selection of several nearest neighbors and a distance metric at the same time. It can predict both discrete and continuous attributes of a dataset.

A distance function is used here to find the similarity of two or more attributes, which will help in further analysis.

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Write Difference Between Data Analysis And Data Mining

Data Analysis: It generally involves extracting, cleansing, transforming, modeling, and visualizing data in order to obtain useful and important information that may contribute towards determining conclusions and deciding what to do next. Analyzing data has been in use since the 1960s. Data Mining: In data mining, also known as knowledge discovery in the database, huge quantities of knowledge are explored and analyzed to find patterns and rules. Since the 1990s, it has been a buzzword.