Paynearby Technologies Data Scientist Interview Questions and Answers

Q1. Methods of valuation
Ans. 
Valuation methods are used to determine the worth of a company or asset.
• Common valuation methods include discounted cash flow (DCF), comparable company analysis (CCA), and precedent transactions analysis.

• DCF involves estimating the future cash flows of a company and discounting them back to present value.

• CCA compares the target company to similar publicly traded companies to determine its value.

• Precedent transactions a...read more
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Q1. What is your expectation for salary
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Q2. As per industry standard.
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Q1. Detailed discussion on past experience and projects.
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Q1. 2 Hackerrank SQL Questions
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Q2. 1 Hackerrank Python Question
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Q1. What is the order of execution in sql
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The order of execution in SQL is: FROM, WHERE, GROUP BY, HAVING, SELECT, ORDER BY.
• 1. FROM: Specifies the tables involved in the query.

• 2. WHERE: Filters the rows based on specified conditions.

• 3. GROUP BY: Groups the rows that have the same values into summary rows.

• 4. HAVING: Filters groups based on specified conditions.

• 5. SELECT: Selects the columns to be included in the result set.

• 6. ORDER BY: Sorts the result set base
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Q1. How to do conditional formatting in excel
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Conditional formatting in Excel allows users to format cells based on specified conditions.
• Select the range of cells you want to apply conditional formatting to

• Go to the 'Home' tab and click on 'Conditional Formatting'

• Choose the desired formatting option, such as color scales, data bars, or icon sets

• Set the conditions for when the formatting should be applied, such as greater than, less than, or equal to a certain valu...read more
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Easy questions based on Logical Reasoning, Mathematics, English

Be sure to put your thoughts on the topic you get, and try to put a point that meets the goals or aspirations of the company.

Q1. Tell me about yourself Tell me something from your resume Desribe your project
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Apti was based on analytical skills

It was a fun GD which had the topic future app experiences.

Asked questions on guestimates and my analytical skills

Q1. HR questions and 1 analytical question asked.
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Q2. Question asked on my location
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Q3. Question asked on guestimates
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Q1. General questions and sql questions
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Q1. Different types of Joins in SQL and what are the outputs when you join two tables with nulls.
Ans. 
Different types of Joins in SQL and the outputs when joining two tables with nulls.
• Types of joins in SQL include inner join, left join, right join, and full outer join.

• When joining two tables with nulls, the output depends on the type of join used.

• In an inner join, null values are excluded from the result.

• In a left join, all rows from the left table and matching rows from the right table are included, with nulls for no...read more
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Q2. Can you union tables with different datatypes.
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Yes, but it requires careful handling of data types and potential conversion.
• Union can be performed on tables with different datatypes, but the resulting table will have a common datatype for each column.

• Data types should be compatible, otherwise conversion may be necessary.

• For example, a table with a column of integers can be unioned with a table with a column of floats, but the resulting column will be of type float.

• ...read more
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Q1. Given a data set, should write sql queries to answer a few questions
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Q2. A few puzzles would be asked to evaluate the problem solving skills.
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Q1. Business Case studies - try parctising profitablility and other cases
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Q1. An Excel round will also be there if you apply for business analyst role.
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Q1. Sql,power bi,aptitude,technical
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Q2. How you take criticism
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