These four data analyst interview questions are only examples. They, for sure, are not the only questions you need to go through before the interview. However, they are excellent examples of what you can expect. Also, I chose them carefully so that they cover the most SQL and Python concep...
Data Analyst Interview Questions On Python 77. You have a dataframe (df) with columns 'Age' and 'Salary', How would you calculate the average salary for each age group? average_salary_by_age = df.groupby('Age')['Salary'].mean() print(average_salary_by_age) Here we are grouping the...
Section 4: Python DataFrame Interview Questions Lecture 7 Python Interview Questions – DataFrame This course discuss some of the tricky coding interview questions, most commonly asked for Data Analyst job interviews. These are also asked for Data Scientist/ data engineer interviews in the preliminary ...
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Before analysis, the data is cleaned up. This implies it’s been cleansed and reviewed to verify there’s no duplicate or error, and that it’s not missing anything. This phase helps in the correction of any inaccuracies before the data is passed onto adata analystfor analysis. ...
One alternative is Ironhack's Data Analytics or Data Science and Machine Learning Bootcamp, where you will learn to work with Python as well as with libraries such as Pandas or NumPy that help you obtain the necessary skills to enter the tech workforce as a data analyst or scientist. Discove...
As an Excel Analyst, you are familiar with vectorization: it’s the default behavior of Excel tables. The support for vectorization with pandas DataFrames makes working with data tables in Python very easy. Cleaning Data in Python The previous section covered one of the most common data-wranglin...
Python, R, SQL, Scikit-learn, TensorFlow, Matplotlib, Seaborn Business Intelligence Analyst Strong analytical skills, proficiency in SQL, understanding of data warehousing and ETL, ability to create visualizations and reports, and business acumen. SQL, Power BI, Tableau, Excel, Python Data Engineer ...
Ace your interview with this comprehensive guide to data engineer interview questions, from HR screening to technical evaluations, including Python and SQL.
(Data Analyst) Write a program that can determine the height of an arbitrary binary tree Create a function that checks if a word is a palindrome. Build a power set. How do you find the median of a very large dataset? . Code a function that calculates the square root (2-point precision...