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10+ Interview Questions and Answers

Updated 20 Mar 2024
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Q1. 1. Bais and variance trade-off 2. How to handle Imbalanced data? 3. What is Multicollinearity and how do you handle it? 4. Explain Lasso & Ridge? 5. Difference between Bagging and Boosting. 6. Explain K-Means c...

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Ans.

Questions related to data analysis techniques and methods.

  • Bais and variance trade-off: balancing model complexity and accuracy

  • Handling imbalanced data: resampling techniques, adjusting class weights, using different evaluation metrics

  • Multicollinearity: when predictor variables are highly correlated, can be handled by feature selection or regularization

  • Lasso & Ridge: regularization techniques to prevent overfitting by adding penalty terms to the loss function

  • Bagging vs Boostin...read more

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Q2. Whom are you going to query when you have TP discrepant data

Ans.

I would query the relevant stakeholders involved in the data collection process.

  • Identify the stakeholders involved in the data collection process

  • Reach out to them to understand the data collection process and identify any potential issues

  • Collaborate with them to resolve the TP discrepant data

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Q3. How many queries were resolved in a day.

Ans.

I don't have the available data to answer the question.

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    Q4. Tell me any one gentral topic to speach?

    Ans.

    The importance of data-driven decision making

    • Data-driven decision making is crucial for businesses to stay competitive

    • It involves collecting and analyzing data to make informed decisions

    • Examples include using customer data to improve marketing strategies or analyzing financial data to make investment decisions

    • Data-driven decision making can lead to increased efficiency, cost savings, and better outcomes

    • However, it's important to ensure the data being used is accurate and rele...read more

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    Q5. What do you know about sql commands?

    Ans.

    SQL commands are used to manipulate and retrieve data from relational databases.

    • SQL stands for Structured Query Language

    • Common SQL commands include SELECT, INSERT, UPDATE, and DELETE

    • SQL commands are used to create, modify, and delete database objects such as tables, views, and indexes

    • Examples: SELECT * FROM customers; INSERT INTO orders (customer_id, order_date) VALUES (1, '2021-01-01'); UPDATE products SET price = 10.99 WHERE id = 1; DELETE FROM customers WHERE id = 1;

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    Q6. How many types of joints and describe

    Ans.

    There are six types of joints in the human body, each with its unique structure and function.

    • Fibrous joints - immovable joints found in the skull

    • Cartilaginous joints - slightly movable joints found in the spine

    • Synovial joints - freely movable joints found in the limbs

    • Ball and socket joint - allows for a wide range of motion, found in the hip and shoulder

    • Hinge joint - allows for movement in one direction, found in the knee and elbow

    • Pivot joint - allows for rotational movement,...read more

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    Q7. Full forms for PV related terminologies

    Ans.

    PV - Pharmacovigilance, PV - Present Value, PV - Photovoltaic

    • Pharmacovigilance (PV) - monitoring and assessing the safety of drugs

    • Present Value (PV) - current worth of a future sum of money

    • Photovoltaic (PV) - technology that converts sunlight into electricity

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    Q8. Regulatory agencies for different countries

    Ans.

    Regulatory agencies oversee and enforce laws and regulations in different countries.

    • FDA (Food and Drug Administration) - United States

    • EMA (European Medicines Agency) - European Union

    • MHRA (Medicines and Healthcare products Regulatory Agency) - United Kingdom

    • TGA (Therapeutic Goods Administration) - Australia

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    Q9. Different classes of drugs?

    Ans.

    Different classes of drugs include opioids, stimulants, depressants, hallucinogens, and cannabinoids.

    • Opioids: Examples include morphine, codeine, and oxycodone.

    • Stimulants: Examples include cocaine, amphetamines, and methylphenidate.

    • Depressants: Examples include alcohol, benzodiazepines, and barbiturates.

    • Hallucinogens: Examples include LSD, psilocybin, and MDMA.

    • Cannabinoids: Examples include THC and CBD.

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    Q10. How to transpose data set

    Ans.

    Transposing a data set involves flipping rows and columns.

    • Identify the data set to be transposed

    • Create a new table with the columns and rows flipped

    • Copy the data from the original table to the new table

    • Transpose can be done using Excel, Python, R, SQL, etc.

    • Example: Transposing a table of sales data to have products as rows and months as columns

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    Q11. Difference in ADR,AE

    Ans.

    ADR stands for Adverse Drug Reaction, while AE stands for Adverse Event. ADR specifically refers to reactions caused by drugs.

    • ADR is a reaction caused by a drug, while AE is a broader term that includes any unexpected or harmful reaction.

    • ADR is specifically related to drugs, while AE can include reactions to other factors such as medical devices or procedures.

    • Example: A patient experiencing nausea after taking a prescribed medication would be considered an ADR, while a patien...read more

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    Q12. Overview of CDM Experience in database

    Ans.

    CDM stands for Common Data Model, used to standardize data for analysis. Experience in database management is crucial for data analysts.

    • CDM is a standardized, structured data model used to organize and analyze data from various sources.

    • Experience in database management is essential for working with CDM, as it involves storing, retrieving, and manipulating data.

    • Knowledge of SQL and database querying is important for extracting and analyzing data within the CDM framework.

    • Famili...read more

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    Q13. Difference between C and Java

    Ans.

    C is a procedural language while Java is an object-oriented language.

    • C is compiled while Java is interpreted

    • C has pointers while Java does not

    • Java has automatic garbage collection while C does not

    • Java is platform-independent while C is not

    • Java has built-in support for multithreading while C does not

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    Q14. What is c++.

    Ans.

    C++ is a high-level programming language used for developing system software, application software, and video games.

    • C++ is an extension of the C programming language.

    • It supports object-oriented programming concepts like classes, inheritance, and polymorphism.

    • C++ is used for developing operating systems, device drivers, and embedded systems.

    • It is also popular for developing video games and high-performance applications.

    • Examples of software written in C++ include the Windows op...read more

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    Q15. Give process outline

    Ans.

    The process outline involves identifying the problem, collecting and analyzing data, and presenting insights and recommendations.

    • Identify the problem or question to be answered

    • Collect relevant data from various sources

    • Clean and preprocess the data

    • Analyze the data using statistical methods and tools

    • Visualize the data to identify patterns and trends

    • Present insights and recommendations to stakeholders

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    Q16. Defination of pv

    Ans.

    PV stands for Present Value, a financial concept used to determine the current worth of a future sum of money.

    • PV is calculated by discounting the future cash flows by a certain rate of return.

    • It helps in making investment decisions by comparing the present value of future cash flows to the initial investment.

    • PV is used in various financial calculations such as net present value (NPV) and internal rate of return (IRR).

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    More about working at Cognizant

    Top Rated Mega Company - 2024
    Top Rated IT/ITES Company - 2024
    HQ - Teaneck. New Jersey., United States (USA)
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