Arcadia Consulting Services Data Scientist Interview Questions and Answers

Simple Data Science Case Study

Q1. Python knowledge related questions
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Data Science Case Study

Marketing case study

Ops case study for plant set up

Q1. Salary expectation
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Machine Learning, Metrics

Simple Data Science Case Study

Q1. Python knowledge related questions
Add your answer

Data Science Case Study

Marketing case study

Ops case study for plant set up

Q1. Salary expectation
Add your answer

Round duration - 90 Minutes
Round difficulty - Medium

The test is divided into 3 sections:
1. R coding.
2. Python coding. This section includes NumPy and scikit questions.
3. Statistics. This section includes T-tests, Anova regression distributions, and chi-square.
Each section has roughly 12 questions. The number of questions and difficulty is not set in advance, the test is adaptive. The more correct answers you give, the more the questions get tougher. The qualification does not depend upon the number of questions solved, rather on the difficulty level you can achive.

Q1. Complete the Code
Complete the function to find the value in a specified categorical column with the highest average of a specified numeric column.
import pandas as pddef category_avg(df, cat_column, num_col...read more
Ans. 
The function finds the value in a specified categorical column with the highest average of a specified numeric column.
• Use the groupby() function in pandas to group the data by the categorical column

• Calculate the average of the numeric column for each group

• Find the group with the highest average and return the corresponding value from the categorical column
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Round duration - 60 Minutes
Round difficulty - Hard

Q1. Rotate matrix by 90 degrees
You are given a square matrix of non-negative integers 'MATRIX'. Your task is to rotate that array by 90 degrees in an anti-clockwise direction using constant extra spac...read more
Ans. 
The task is to rotate a square matrix by 90 degrees in an anti-clockwise direction using constant extra space.
• Iterate through each layer of the matrix from outer to inner

• For each layer, perform a four-way swap of elements

• Continue this process until all layers have been rotated
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Round duration - 30 Minutes
Round difficulty - Medium

Q1. Basic HR Questions
How was your interview experience so far?
Why do you want to join us?
Are you a leader or a follower?
Ans. 
Answering basic HR questions in a data science intern interview.
• My interview experience so far has been positive and informative.

• I want to join your company because of its reputation in the data science field and the opportunity to work on challenging projects.

• I consider myself a leader as I have successfully led a team in a previous project.

• I believe in taking initiative and guiding others towards achieving common goa...read more
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