Preparing for your data science interview: Common R programming, SQL and Tableau questions

Posted on June 11, 2021September 19, 2024 by Imarticus Learning

Last Updated on 1 year ago by Imarticus Learning

Preparing for your data science interview: Common R programming, SQL and Tableau questions

This data science interview questions blog includes the most frequently asked data science questions. Here is the list of top R programming, SQL and Tableau questions.

R Programming Interview Questions

R finds application in various use cases, from statistical analysis to predictive modelling, data visualisation and data manipulation. Facebook, Twitter and Google use R-programming training to process the huge amount of data they collect.

Which are the R packages used for data imputation?

Missing data is a challenging problem to deal with. In such cases, you can impute the lost values with plausible values. Amelia, Hmisc, missForest, Mice and mi are the data imputation packages used by R. In R, missing values are represented by NA, which should be in capital letters.

Define clustering. Explain how hierarchical clustering is different from K-means clustering.

A cluster, just like the literal meaning of the word, is a group of similar objects. K denotes the number of centroids needed in a data set. While performing data mining, k selects random centroids and optimises the positions through iterative calculations.

The optimisation process stops when the desired number of repetitive calculations have taken place or when the centroids stabilise after successful clustering. Hierarchical clustering starts by considering every single observation in the data as a cluster. Then it works to discover two closely placed clusters and merges them. This process continues until all the clusters merge to form just a single cluster.

SQL Interview Questions

If you have completed your SQL training, the following questions will give you a taste of the technical questions you may face during the interview.

What is the difference between MySQL and SQL?

Standard Query Language (SQL) is an English-based query language, while MySQL is used for database management.

What do you mean by DBMS, and how many types of DBMS are there?

DBMS or the Database Management System is a software set that interacts with the user and the database to analyse the available data. Thus, it allows the user to access the data presented in different forms – images, strings, or numbers – modify them, retrieve them and even delete them.

There are two types of DBMS:

Relational: The data is placed in some relations (tables).

Non-Relational: Random data that are not placed in any relations or attributes.

Tableau Interview Questions

Tableau is becoming popular among the leading business houses. If you have just completed your Tableau training, then the interview questions listed below could be good examples.

What is Tableau? How is Tableau different from the traditional BI tools?

Tableau is a business intelligence software connecting users to their respective data. It also helps develop and visualise interactive dashboards and facilitates dashboard sharing. Traditional BI tools work on an old data architecture supported by complex technologies. Tableau is fast and dynamic and is supported by advanced technology. It supports in-memory computing. ‘Measures’ denote the measurable values of data. These values are stored in specific tables, and each dimension is associated with a specific key. Dimensions are the attributes that define the characteristics of data. For instance, a dimension table with a product key reference can be associated with attributes such as product name, colour, size, description, etc.

The above questions are examples to help you get a feel of the technical questions generally asked during the interviews.

Why Should One Go Through The Hassle of Earning An Online MBA?

Posted on June 11, 2021March 22, 2024 by Imarticus Learning

Last Updated on 2 years ago by Imarticus Learning

An online MBA may provide several benefits, including increased compensation, skill development, networking opportunities, and the possibility of job growth. An MBA is often required for advancement into senior management positions, particularly in sectors such as investment banking.

Traditional campus-based MBA programs, on the other hand, can provide challenges to ambitious students. Work-life balance may not be compatible with an on-campus schedule or commuting time necessary for in-person class attendance. In addition, most full-time and on-campus programs require two years to complete.

Why should one go through the hassle of earning an online MBA?

An MBA prepares students for careers as sales managers, business management experts, top executives, and financial managers, and is one of the most adaptable and in-demand degrees available. Business and financial jobs are expected to increase at a greater pace than the average for all professions.

The finest online MBA programmes enable students to get business school degrees while spending less time and money than conventional MBA programmes.

An accelerated MBA program normally lasts 12 months, whereas a traditional business program lasts 24 months.

To get a top university business degree, you don’t have to leave your work or relocate to a new area. Learn from the same teachers and obtain a high-value diploma from the same institution. With live and interactive classroom settings, you can build a network. Choose from a range of online MBA programmes and business degrees in some of the most in-demand professions today.

Four out of five business school graduates assessed the value of their graduate education as exceptional or exceptional, according to a study of over 11,000 respondents. Knowing what they know today, nine out of 10 people would still seek their degree. The vast majority of business school graduates regarded their education to be emotionally, professionally, and financially worthwhile.

Subjects in MBA –

Accounting
Operations
Aviation
Finance
IT
Human resources
Retail
Ethics
Export
Import

Benefits –

The online MBA program is both flexible and cost-effective. On weekends, the sessions are held online. The curriculum consists mostly of projects, modules, and assessments that may be completed at one’s own leisure.
Online MBA is available to both recent graduates and working professionals.
Because there is no necessity to attend physical sessions, an Online MBA education provided by a school in a distant city or country might be chosen.
In terms of time, most Online MBA programmes are shorter than Full Time MBA programmes.
There is no necessity to have taken an MBA admission test in order to study for an Online MBA.
The online MBA program provides the distinct advantage of digital learning. Learning with a learning management system (LMS) provides the sense of being in a digital classroom where technology is used to facilitate classroom lectures, discussion, interaction, assessments, and assessment.

What makes MBA online programs so appealing?

Each MBA program has its own set of advantages. The curriculum at Kenan-Flagler Business School is supposed to provide a strong focus on analytical capabilities while also emphasizing leadership and management. Students may get their MBA with a specialization in entrepreneurship, which isn’t available at most institutions.

At Tepper School of Business, part-time online MBA students have the chance to take brief on-site intensive “Access Weekends”, which are offered two months apart at different places throughout the country, at the same time that they enroll in the online coursework. Students like the program’s inclusiveness. “Treated precisely the same as [Tepper’s] full-time and part-time programs,” is what students like.

“High-caliber programming with optimal circumstances for a chaotic work environment,” “affordable cost,” and an “Accelerated pace” In general, students have praised the curriculum as “challenging, but extremely beneficial.” The “real-life business cases”, an “excellent online platform to disseminate materials,” and “highly qualified instructors” are also lauded.

Ultimately, an MBA online education may provide students with a greater value for their money, compared to a traditional degree program.

Pros And Cons of Derivatives Markets!

Posted on June 11, 2021March 22, 2024 by Imarticus Learning

Last Updated on 2 years ago by Imarticus Learning

If you are interested in pursuing a career in finance, then you may have come across the term derivatives market. And, for anyone wanting to become a certified investment banking operations professional, learning about derivatives markets is essential.

So, let’s dive into the definition of derivatives, what advantages and disadvantages they offer, and also, what is investment banking and how is it related to them. Read on…

What are derivatives?

Derivatives refer to financial contracts whose value is associated with the value of an underlying asset. You can use these advanced financial instruments for many purposes such as getting access to markets and hedging. Except for a few derivatives such as futures and options that are traded on specific exchanges, most of them are traded over the counter, also known as OTC.

Some of the most prominent derivatives markets are Korea Exchange, CME Group (Chicago Mercantile Exchange and Chicago Board of Trade), and Eurex.

Notably, derivatives have been in the finance industry since their inception. Over time, they have become an integral part of modern markets. However, you should not confuse the derivatives market with a capital market. In a capital market, the primary securities you trade are stocks and bonds while in a derivatives market you trade futures and options.

Pros of derivatives markets

Some pros of derivatives markets are:

A derivatives market allows you to hedge risk exposure. For example, you can buy a derivative contract whose value goes in the opposite direction to the value of an asset you own. It would help you offset the losses.
You can use derivatives to find the price of the underlying asset.
Derivatives enhance the efficiency of financial markets. You can mimic the payoff of the assets by using the relevant derivative contracts.

Cons of derivatives markets

There are some cons of derivatives markets too. And, they are:

Derivatives are highly volatile and might expose you to huge losses.
Many experts regard them as tools of speculation because of their unpredictable behavior.
Even with due diligence, some OTC derivative contracts do not have a benchmark for due diligence, increasing the risk of counterparty default.

Learn more about finance

Companies are constantly on the lookout for experts who can analyze the markets and strategize their investments accordingly. Risk management in banking and investment banking allows companies to find potential growth opportunities in the markets.

If finance is your career choice, then you must learn what is investment banking and what risk management in banking is along with other concepts. And, the best way to go about this is to take up an investment banking course.

Pursuing a well-structured investment banking course will familiarize you with the basic and advanced concepts of finance. It will provide you with a structured curriculum so you can plan your studies properly.

Besides, an investment banker course would certify you as an expert, making it easier for you to stand out as a professional. Recruiters in the finance sector use certifications to find serious and highly skilled candidates, hence, it would accelerate your career growth substantially.

By and large, derivatives markets are significantly important and form an integral part of modern finance. And, investment bankers help companies in analyzing these markets and determine their future plans.

If you are interested in entering this sector as a professional, then you should complete an investment banker course. It will help you learn the necessary subjects while getting certified as an expert. You can check out our investment banking course details here.

What Is Capital Market And The Career Opportunities Worth Exploring?

Posted on June 11, 2021March 21, 2024 by Imarticus Learning

Last Updated on 2 years ago by Imarticus Learning

The term capital market describes the financial markets in which money and other assets are raised for companies, governments, and individuals.

These markets include banking institutions that provide loans to consumers or businesses; stock exchanges; bond markets; futures exchange; derivatives trading systems; interest rates, equities, gold prices, oil prices, and central banks.

As a result, there are immense career opportunities in the capital market, and this blog discusses in brief capital markets career paths.

Career Options in Capital Markets?

Relationship Manager: To manage the accounts of individual customers in the bank or financial institutions and educates them to purchase suitable products.

A relationship manager caters to corporate clients like multinational companies or SMEs. An ideal relationship manager should strategize well, be a good listener, communicator, reliable, and have in-depth knowledge of financial markets and trade life cycle in the capital market.

Stock Broker: They help a retail investor to buy stocks via exchanges like BSE, NSE. A stockbroker must be well-versed in markets and be on tips with the latest market trends. A stockbroker is confident about the future movement of stocks and can offer timely advice on transactions.

Capital Market Consultant: Consultants help leading banks automate operations to reduce costs, improve customer service, grow revenue, and gain a competitive advantage. A Consultant must possess expertise in capital market businesses, functional and other technical areas. In addition, consultants must be handy on innovative practices, understanding predictive analytics, robotics, artificial intelligence, blockchain, etc.

Portfolio Manager: A portfolio manager manages accounts and investments of high-net-worth individuals. They advise on optimal investment mix and suggest picking the right assets. The portfolio manager must have profound knowledge of financial planning and be capable of providing genuine advice.

Investment Banker: Investment bankers are financial advisors to corporations and governments. Clients raise money through investment bankers. Then, on the advice from investment bankers, clients issue stock, float bonds, negotiate an acquisition or arrange a sale of the valuable assets.

Skills needed to pursue a career in Capital Markets:

By now, you must have understood the capital market and the career scope; it’s time to understand the skills and education required to make a career in this industry. The skills required for a career in capital markets are similar to that of Investment Banking and Equity Research.

With a PG degree in Finance, you can enter the market. But also need to focus on specialized skills like marketing, financial modeling, and analytics to prepare for new-age opportunities in the capital markets.

Therefore, it makes even more sense if you have an idea to pursue a specialized course for careers in Capital Markets. Such specialization programs provide holistic insights into learning various aspects of Capital Markets.

Take a Leap with Imarticus:

Imarticus offers a range of courses in Finance and Certified Investment Banking Operations Professional course which help students leap. Industry experts design the course framework to understand complex securities and derivative products, trade-lifecycles, and functions within investment banking operations.

Imarticus assists fresh graduates and professionals gain vital knowledge of financial systems and capital market and teach negotiation and communication skills to attain a professional grip in Capital Markets. In addition, students enjoy networking and continuous placement support from Imarticus to land into the best organizations.

Commence the transformative journey in capital markets today; send an inquiry now! Avail 24×7 Live Chat Support System and request virtual guidance from experts!

All You Need to Know About Skills Needed to Endorse a Career as DATA SCIENTIST!

Posted on June 11, 2021April 2, 2024 by Imarticus Learning

Last Updated on 2 years ago by Imarticus Learning

Data works as a new-age catalyst and is the reason why organizations function. In recent years, data has enjoyed prominence in every possible industry. There no doubt that a job in Data Science is a dream for many. But what is it that you need to do to land there?

This Blog typically talks about what Data Science is and the skills you need to be a Data Scientist. Keep Reading!

What is Data Science?

Data Science is a complex blend of various algorithms, tools, and machine learning principles. The aim is to discover hidden patterns from raw data. In other words, data science filters the data to extract information and draw meaningful insights from it. This takes into account both structured and unstructured data.

Data Science is deployed to make decisions and predictions using predictive causal analytics, prescriptive analytics, and machine learning.

What data scientists do?

Data scientists crack complex data problems through their expertise in specific scientific disciplines. They work with elements related to statistics, mathematics, computer science, etc. Data scientists use technology to find solutions and reach conclusions and suggestions for an organization’s growth and development. Data Scientists are the most necessary assets in new-age organizations.

What are the requirements to become a data analyst?

Programming Languages (R/SAS): Proficiency in one language and working knowledge of others is a must.
Creative and Analytical Thinking: A good analyst should be curious and creative. Having a critical and analytical approach is another attribute.
Strong and Effective Communication: Must be capable of clearly communicate findings.
Data Warehousing: Data analysts must know connecting databases from multiple sources to create a data warehouse and manage it.
SQL Databases: Data analysts must possess the knowledge to manage relational databases like SQL databases with other structured data.
Data Mining, Cleaning, and Munging: Data analysts must be proficient in using tools to gather unstructured data, clean and process it through programming.
Machine Learning: Machine learning skills for data analysts are incredibly valuable to possess.

How to become a data analyst?

If you wish to make a career in Data Science, here are the steps you must consider following:

Earn a bachelor’s degree in any discipline with an emphasis on statistical and analytical skills.

Learn essential data analytics skills (listed above).

Opt for Certification in data science courses.

Secure first entry-level data analyst job.

Earn a PG degree/Equivalent Program in data analytics.

Grow You Data Science Career with Imarticus Learning:

Imarticus offers some best data science courses in India, ideal for fresh graduates and professionals. If you plan to fast-track your Data Science career with guaranteed job interviews opportunities, Imarticus is the place you need to head for right away!

Industry experts design the Certification programs in data science courses and PG programs to help you learn real-world data science applications from scratch and build robust models to generate valuable business insights and predictions.

The rigorous exercises, hands-on projects, boot camps, hackathon, and a personalized Capstone project, throughout the program curriculum prepare you to start a career in Data Analytics at A-list firms and start-ups.

The benefits of business analytics courses and data science programs at Imarticus:

360-degree learning
Industry-Endorsed Curriculum
Experiential Learning
Tech-enabled learning
Learning Management System
Lecture Recording
Career services
Assured Placements
Placement Support
Industry connects

Ready to commence a Transformative journey in the field of Data Science with Imarticus Learning? Send an inquiry now through the Live Chat Support System and request virtual guidance!

Day: June 11, 2021