365 Data Science Q&A Hub

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Introduction to Tableau
The Complete Data Visualization Course with Python, R, Tableau, and Excel
Introduction to R Programming
Data Preprocessing with NumPy
Introduction to Data and Data Science
Data Cleaning and Preprocessing with pandas
Introduction to Business Analytics
Data Analysis with Excel Pivot Tables
SQL
Credit Risk Modeling in Python
Python Programmer Bootcamp
SQL + Tableau + Python
Introduction to Jupyter
Statistics
Mathematics
Introduction to Excel
Probability
Starting a Career in Data Science: Project Portfolio, Resume, and Interview Process
SQL + Tableau
Time Series Analysis with Python
Power BI
Product Management for AI & Data Science
Git and GitHub
Deep Learning with TensorFlow 2
Customer Analytics in Python
Web Scraping and API Fundamentals in Python
Introduction to Python
Python for Finance
Machine Learning in Python
Advanced Microsoft Excel
Convolutional Neural Networks with TensorFlow in Python
Data Strategy
Fashion Analytics with Tableau
Dates and Times in Python
SQL for Data Science Interviews
Data Literacy
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Linear Algebra and Feature Selection
Machine Learning with Naïve Bayes
Machine Learning in Excel
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A/B Testing in Python
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Excel for Project Management
Agile and Scrum Project Management
Project Management
Blockchain for Business
How to Think Like a Data Scientist to Become One
Power Query and Data Modeling
Introduction to DAX
Building Business Reports Using Power BI
The Machine Learning Process A-Z
Working with Text Files in Python
Intermediate Python Programming
Advanced SQL
The Machine Learning Algorithms A-Z
Customer Churn Analysis with SQL and Tableau
Machine Learning Deep Dive: Business Applications and Coding Walkthroughs
Customer Engagement Analysis with SQL and Tableau
Advanced SQL for Data Engineering
Communication and Presentation Skills for Analysts and Managers
Intro to ChatGPT and Generative AI
Data Analysis in PowerBI with ChatGPT
Mastering Key Performance Indicators (KPIs)
Sign-Up Flow Optimization Analysis with SQL and Tableau
Python for Social Media Analytics
Intro to NLP for AI
Data Analysis with ChatGPT
ChatGPT for Data Science
Intro to LLMs
Growth Analysis with SQL, Python, and Tableau
Intro to Data Engineering
Statistical Tests in Sales and Marketing
Build Chat Applications with OpenAI and LangChain
Introduction to Vector Databases with Pinecone
Intro to Revenue Analytics
Intro to AI
Python 101: Kickoff
Introducing Algorithms in Python
Speech Recognition with Python
Deep Learning with Pytorch
Intermediate Revenue Analytics
Introduction to Data Architecture
Introduction to Hugging Face
Introduction to AWS Cloud
LLM Engineering in Practice with Streamlit and OpenAI
Understanding Cloud Computing
Introduction to Data Warehousing
Building Data Pipelines with Apache Airflow
Math Foundation for ML
Data Ingestion with Pandas
Introduction to LLaMA
Intro to Google Cloud
Fully Automated MLOps
Econometrics I
Intro to Shell
Intro to Microsoft Azure
Python Coding Interview Prep
Power BI Data Visualization Hero
Python 102: Beginner's Power-Up
AI Ethics
AI Model deployment on AWS
Evaluating AI Agents: From Metrics to Real-World Impact
Introduction to Databricks
MCPs for Everyone: Supercharge Your AI Tooling Skills
Advanced Time Series Analysis with Python
Build Conversational AI Memory with LangGraph
ChatGPT at Work: Ethical and Secure ChatGPT Use
ChatGPT for SQL Beginners
Intro to AI Agents and Agentic AI
AI Strategy
Copilot in Excel
AI Agents in Practice
AI Agent Architecture

By status

Answered
Resolved

By course

Introduction to Tableau
The Complete Data Visualization Course with Python, R, Tableau, and Excel
Introduction to R Programming
Data Preprocessing with NumPy
Introduction to Data and Data Science
Data Cleaning and Preprocessing with pandas
Introduction to Business Analytics
Data Analysis with Excel Pivot Tables
SQL
Credit Risk Modeling in Python
Python Programmer Bootcamp
SQL + Tableau + Python
Introduction to Jupyter
Statistics
Mathematics
Introduction to Excel
Probability
Starting a Career in Data Science: Project Portfolio, Resume, and Interview Process
SQL + Tableau
Time Series Analysis with Python
Power BI
Product Management for AI & Data Science
Git and GitHub
Deep Learning with TensorFlow 2
Customer Analytics in Python
Web Scraping and API Fundamentals in Python
Introduction to Python
Python for Finance
Machine Learning in Python
Advanced Microsoft Excel
Convolutional Neural Networks with TensorFlow in Python
Data Strategy
Fashion Analytics with Tableau
Dates and Times in Python
SQL for Data Science Interviews
Data Literacy
AI Applications for Business Success
Linear Algebra and Feature Selection
Machine Learning with Naïve Bayes
Machine Learning in Excel
Machine Learning with Support Vector Machines
A/B Testing in Python
Machine Learning with Decision Trees and Random Forests
Machine Learning with K-Nearest Neighbors
Machine Learning with Ridge and Lasso Regression
Data-Driven Business Growth
Corporate Strategy
Marketing Strategy
Negotiation
Management
Persuasion and Influence
Excel for Project Management
Agile and Scrum Project Management
Project Management
Blockchain for Business
How to Think Like a Data Scientist to Become One
Power Query and Data Modeling
Introduction to DAX
Building Business Reports Using Power BI
The Machine Learning Process A-Z
Working with Text Files in Python
Intermediate Python Programming
Advanced SQL
The Machine Learning Algorithms A-Z
Customer Churn Analysis with SQL and Tableau
Machine Learning Deep Dive: Business Applications and Coding Walkthroughs
Customer Engagement Analysis with SQL and Tableau
Advanced SQL for Data Engineering
Communication and Presentation Skills for Analysts and Managers
Intro to ChatGPT and Generative AI
Data Analysis in PowerBI with ChatGPT
Mastering Key Performance Indicators (KPIs)
Sign-Up Flow Optimization Analysis with SQL and Tableau
Python for Social Media Analytics
Intro to NLP for AI
Data Analysis with ChatGPT
ChatGPT for Data Science
Intro to LLMs
Growth Analysis with SQL, Python, and Tableau
Intro to Data Engineering
Statistical Tests in Sales and Marketing
Build Chat Applications with OpenAI and LangChain
Introduction to Vector Databases with Pinecone
Intro to Revenue Analytics
Intro to AI
Python 101: Kickoff
Introducing Algorithms in Python
Speech Recognition with Python
Deep Learning with Pytorch
Intermediate Revenue Analytics
Introduction to Data Architecture
Introduction to Hugging Face
Introduction to AWS Cloud
LLM Engineering in Practice with Streamlit and OpenAI
Understanding Cloud Computing
Introduction to Data Warehousing
Building Data Pipelines with Apache Airflow
Math Foundation for ML
Data Ingestion with Pandas
Introduction to LLaMA
Intro to Google Cloud
Fully Automated MLOps
Econometrics I
Intro to Shell
Intro to Microsoft Azure
Python Coding Interview Prep
Power BI Data Visualization Hero
Python 102: Beginner's Power-Up
AI Ethics
AI Model deployment on AWS
Evaluating AI Agents: From Metrics to Real-World Impact
Introduction to Databricks
MCPs for Everyone: Supercharge Your AI Tooling Skills
Advanced Time Series Analysis with Python
Build Conversational AI Memory with LangGraph
ChatGPT at Work: Ethical and Secure ChatGPT Use
ChatGPT for SQL Beginners
Intro to AI Agents and Agentic AI
AI Strategy
Copilot in Excel
AI Agents in Practice
AI Agent Architecture

By status

Answered
Resolved

8670 results

Maxime Darbouze

0

1

Key constrain exercise codes are not working

when I type these code in my sql from sql file exercise it does not work. CREATE TABLE companies ( ...

Last answered: Apr 18th 2022

Maxime Darbouze

0

1

Primary key assignment from sql file

I get an error when I type these codes from sql files. Why is that? what does the numeric function do? CREATE TABLE...

Last answered: Apr 18th 2022

Maxime Darbouze

0

4

I wrote the same command that is the sql file and it did not work

I wrote the same command in the sql file and it did not work Create Table customers ( customer_id int first_name...

Last answered: Apr 18th 2022

Timur Abdukarimov

0

1

Please could you comment on my P-value understanding below?

Dear Author, First of all, thank you very much for such a nice video presentation. But I have doubt below on exercise...

Last answered: Dec 2nd 2022

Timur Abdukarimov

0

0

We decided to reject H0 based on P-value. But...

Hi, I am wondering if there is a more evident way for a non-statistician person to understand why we reject the...

CATHERINE RICHARD

0

1

Resolved: Why not use names_count as part of HAVING condition?

In the SELECT statement, COUNT(first_name) is aliased as names_count. Why write the HAVING statement as...

Last answered: Apr 18th 2022

ABDULGAFAR SALIUOKULU

Super learner

0

2

Resolved: handling Medical Datasets with Categorical data in tf

Good day, I have a medical dataset that I got from Kaggle, this data has 80 percent categorical data as predictors...

Deep Learning with TensorFlow 2

Last answered: Oct 19th 2023

0

2

ValueError: Found unknown categories [nan] in column 2 during fit

import pandas as pd import matplotlib.pyplot as plt from sklearn.model_selection import...

Machine Learning in Python

Last answered: Apr 12th 2022

Tanzeela Arshad

0

1

Independent and Dependent events

How drawing a diamond and drawing an ace are independent events? How other options are not independent? Question is...

Last answered: Apr 11th 2022

Timur Abdukarimov

0

1

Resolved: Alpha value: when alpha itself and alpha / 2 is used?

Hi, I was wondering when the alpha value divided by 2 and alpha without division is used? In Z and T table we divide...

Last answered: May 7th 2022

Timur Abdukarimov

4

4

Resolved: Please check the example of my understanding if I am correct?

H0 > the fact you want to reject, H1 > the fact you want to approve. Is it like this? For example, someone says...

Last answered: Nov 2nd 2023

2

1

what is " if not self.list_stack: " mean?

what is " if not self.list_stack: " mean? why it can check if the stack is empty or not?

Python Programmer Bootcamp

Last answered: Apr 11th 2022

0

2

I need help with Question 5 from practice exam 3

Hello, I need help with the SUMIF formula from practice exam 3, I still don't understand why the formula looks like...

Introduction to Excel

Last answered: Nov 6th 2022

Timur Abdukarimov

1

3

Why the way of calculating STD error and STD error of difference is different?

Please help me to understand. I did researches in the internet, but it is still unclear for me. STD error calculation...

Last answered: Oct 17th 2023

Yossef Mohamed Elfeel

1

1

last update of tableau it didn't work?

i tried it several times in the last update to make Stacked Area Chart in tableau and it make it separated not in one...

The Complete Data Visualization Course with Python, R, Tableau, and Excel

Last answered: Apr 19th 2022

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popular questions

Omar R. Valencia García

28

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The line reg.predict(1740) does not work anymore

Rafael Rodrigues de Siqueira

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