Turing Lead Data Scientist Interview Questions and Answers

Q1. Tell me about yourself.
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Questions related to logical thinking

Common topics related to AI & other stuffs

Q1. Excel basic questions such as conditional formatting
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Q2. Sql questions such as Types of Joints etc
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It was a round of multiple-choice questions focused on aptitude and SQL, lasting approximately an hour.

The second round consisted of multiple-choice questions on Python and a coding question focused on topics related to data analytics, specifically using Pandas and NumPy.

Q1. Difference between Rank, Dense Rank and row Number, 2nd highest salary with and without window function.
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Q2. Told me to write a python function to give Factorial of a number.
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Q1. Difference between rank and dense rank
Ans. 
Rank assigns unique ranks to each distinct value, while dense rank does not leave gaps between ranks.
• Rank assigns unique ranks to each distinct value in a dataset

• Dense rank does not leave gaps between ranks, assigning consecutive ranks to values with the same rank

• For example, if values are 10, 20, 20, 30, then rank would be 1, 2, 2, 4 and dense rank would be 1, 2, 2, 3
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Q2. How will merge multiple file in python
Ans. 
Merge multiple files in Python using pandas.concat() or pd.merge() functions.
• Use pandas.concat() function to merge multiple files vertically (row-wise).

• Use pd.merge() function to merge multiple files horizontally (column-wise) based on a common column.

• Ensure that the files have compatible column names and data types before merging.

• Handle any missing or duplicate values appropriately during the merging process.

• Consider ...read more
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Q3. Data frame explain in detail
Ans. 
A data frame is a two-dimensional data structure in which data is stored in rows and columns.
• Data frames are commonly used in programming languages like R and Python for data analysis.

• Each column in a data frame represents a variable, while each row represents an observation.

• Data frames can contain different types of data, such as numeric, character, and factor.

• Data frames can be created from various sources like CSV f
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Q1. Sql questions mostly about windows function, aggregate, using having clause in group, union vs union all, mostly basics about sql.
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Q2. Power Bi questions - measures in powerbi, calculate, dashboard, excel vs powerbi.
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Q3. Assesment 5 question based on sql and excel. Easy questions like second highest salary, manager salary, count a's.
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Q1. Be confident there is no barrier of language in this organisation if you are comfortable in hindi use it
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