🚀 Complete Roadmap to Become a Data Scientist in 5 Months
📅 Week 1-2: Fundamentals
✅ Day 1-3: Introduction to Data Science, its applications, and roles.
✅ Day 4-7: Brush up on Python programming 🐍.
✅ Day 8-10: Learn basic statistics 📊 and probability 🎲.
🔍 Week 3-4: Data Manipulation & Visualization
📝 Day 11-15: Master Pandas for data manipulation.
📈 Day 16-20: Learn Matplotlib & Seaborn for data visualization.
🤖 Week 5-6: Machine Learning Foundations
🔬 Day 21-25: Introduction to scikit-learn.
📊 Day 26-30: Learn Linear & Logistic Regression.
🏗 Week 7-8: Advanced Machine Learning
🌳 Day 31-35: Explore Decision Trees & Random Forests.
📌 Day 36-40: Learn Clustering (K-Means, DBSCAN) & Dimensionality Reduction.
🧠 Week 9-10: Deep Learning
🤖 Day 41-45: Basics of Neural Networks with TensorFlow/Keras.
📸 Day 46-50: Learn CNNs & RNNs for image & text data.
🏛 Week 11-12: Data Engineering
🗄 Day 51-55: Learn SQL & Databases.
🧹 Day 56-60: Data Preprocessing & Cleaning.
📊 Week 13-14: Model Evaluation & Optimization
📏 Day 61-65: Learn Cross-validation & Hyperparameter Tuning.
📉 Day 66-70: Understand Evaluation Metrics (Accuracy, Precision, Recall, F1-score).
🏗 Week 15-16: Big Data & Tools
🐘 Day 71-75: Introduction to Big Data Technologies (Hadoop, Spark).
☁️ Day 76-80: Learn Cloud Computing (AWS, GCP, Azure).
🚀 Week 17-18: Deployment & Production
🛠 Day 81-85: Deploy models using Flask or FastAPI.
📦 Day 86-90: Learn Docker & Cloud Deployment (AWS, Heroku).
🎯 Week 19-20: Specialization
📝 Day 91-95: Choose NLP or Computer Vision, based on your interest.
🏆 Week 21-22: Projects & Portfolio
📂 Day 96-100: Work on Personal Data Science Projects.
💬 Week 23-24: Soft Skills & Networking
🎤 Day 101-105: Improve Communication & Presentation Skills.
🌐 Day 106-110: Attend Online Meetups & Forums.
🎯 Week 25-26: Interview Preparation
💻 Day 111-115: Practice Coding Interviews (LeetCode, HackerRank).
📂 Day 116-120: Review your projects & prepare for discussions.
👨💻 Week 27-28: Apply for Jobs
📩 Day 121-125: Start applying for Entry-Level Data Scientist positions.
🎤 Week 29-30: Interviews
📝 Day 126-130: Attend Interviews & Practice Whiteboard Problems.
🔄 Week 31-32: Continuous Learning
📰 Day 131-135: Stay updated with the Latest Data Science Trends.
🏆 Week 33-34: Accepting Offers
📝 Day 136-140: Evaluate job offers & Negotiate Your Salary.
🏢 Week 35-36: Settling In
🎯 Day 141-150: Start your New Data Science Job, adapt & keep learning!
🎉 Enjoy Learning & Build Your Dream Career in Data Science! 🚀🔥
📅 Week 1-2: Fundamentals
✅ Day 1-3: Introduction to Data Science, its applications, and roles.
✅ Day 4-7: Brush up on Python programming 🐍.
✅ Day 8-10: Learn basic statistics 📊 and probability 🎲.
🔍 Week 3-4: Data Manipulation & Visualization
📝 Day 11-15: Master Pandas for data manipulation.
📈 Day 16-20: Learn Matplotlib & Seaborn for data visualization.
🤖 Week 5-6: Machine Learning Foundations
🔬 Day 21-25: Introduction to scikit-learn.
📊 Day 26-30: Learn Linear & Logistic Regression.
🏗 Week 7-8: Advanced Machine Learning
🌳 Day 31-35: Explore Decision Trees & Random Forests.
📌 Day 36-40: Learn Clustering (K-Means, DBSCAN) & Dimensionality Reduction.
🧠 Week 9-10: Deep Learning
🤖 Day 41-45: Basics of Neural Networks with TensorFlow/Keras.
📸 Day 46-50: Learn CNNs & RNNs for image & text data.
🏛 Week 11-12: Data Engineering
🗄 Day 51-55: Learn SQL & Databases.
🧹 Day 56-60: Data Preprocessing & Cleaning.
📊 Week 13-14: Model Evaluation & Optimization
📏 Day 61-65: Learn Cross-validation & Hyperparameter Tuning.
📉 Day 66-70: Understand Evaluation Metrics (Accuracy, Precision, Recall, F1-score).
🏗 Week 15-16: Big Data & Tools
🐘 Day 71-75: Introduction to Big Data Technologies (Hadoop, Spark).
☁️ Day 76-80: Learn Cloud Computing (AWS, GCP, Azure).
🚀 Week 17-18: Deployment & Production
🛠 Day 81-85: Deploy models using Flask or FastAPI.
📦 Day 86-90: Learn Docker & Cloud Deployment (AWS, Heroku).
🎯 Week 19-20: Specialization
📝 Day 91-95: Choose NLP or Computer Vision, based on your interest.
🏆 Week 21-22: Projects & Portfolio
📂 Day 96-100: Work on Personal Data Science Projects.
💬 Week 23-24: Soft Skills & Networking
🎤 Day 101-105: Improve Communication & Presentation Skills.
🌐 Day 106-110: Attend Online Meetups & Forums.
🎯 Week 25-26: Interview Preparation
💻 Day 111-115: Practice Coding Interviews (LeetCode, HackerRank).
📂 Day 116-120: Review your projects & prepare for discussions.
👨💻 Week 27-28: Apply for Jobs
📩 Day 121-125: Start applying for Entry-Level Data Scientist positions.
🎤 Week 29-30: Interviews
📝 Day 126-130: Attend Interviews & Practice Whiteboard Problems.
🔄 Week 31-32: Continuous Learning
📰 Day 131-135: Stay updated with the Latest Data Science Trends.
🏆 Week 33-34: Accepting Offers
📝 Day 136-140: Evaluate job offers & Negotiate Your Salary.
🏢 Week 35-36: Settling In
🎯 Day 141-150: Start your New Data Science Job, adapt & keep learning!
🎉 Enjoy Learning & Build Your Dream Career in Data Science! 🚀🔥
❤5
Essential Python Libraries for Data Science
- Numpy: Fundamental for numerical operations, handling arrays, and mathematical functions.
- SciPy: Complements Numpy with additional functionalities for scientific computing, including optimization and signal processing.
- Pandas: Essential for data manipulation and analysis, offering powerful data structures like DataFrames.
- Matplotlib: A versatile plotting library for creating static, interactive, and animated visualizations.
- Keras: A high-level neural networks API, facilitating rapid prototyping and experimentation in deep learning.
- TensorFlow: An open-source machine learning framework widely used for building and training deep learning models.
- Scikit-learn: Provides simple and efficient tools for data mining, machine learning, and statistical modeling.
- Seaborn: Built on Matplotlib, Seaborn enhances data visualization with a high-level interface for drawing attractive and informative statistical graphics.
- Statsmodels: Focuses on estimating and testing statistical models, providing tools for exploring data, estimating models, and statistical testing.
- NLTK (Natural Language Toolkit): A library for working with human language data, supporting tasks like classification, tokenization, stemming, tagging, parsing, and more.
These libraries collectively empower data scientists to handle various tasks, from data preprocessing to advanced machine learning implementations.
ENJOY LEARNING 👍👍
- Numpy: Fundamental for numerical operations, handling arrays, and mathematical functions.
- SciPy: Complements Numpy with additional functionalities for scientific computing, including optimization and signal processing.
- Pandas: Essential for data manipulation and analysis, offering powerful data structures like DataFrames.
- Matplotlib: A versatile plotting library for creating static, interactive, and animated visualizations.
- Keras: A high-level neural networks API, facilitating rapid prototyping and experimentation in deep learning.
- TensorFlow: An open-source machine learning framework widely used for building and training deep learning models.
- Scikit-learn: Provides simple and efficient tools for data mining, machine learning, and statistical modeling.
- Seaborn: Built on Matplotlib, Seaborn enhances data visualization with a high-level interface for drawing attractive and informative statistical graphics.
- Statsmodels: Focuses on estimating and testing statistical models, providing tools for exploring data, estimating models, and statistical testing.
- NLTK (Natural Language Toolkit): A library for working with human language data, supporting tasks like classification, tokenization, stemming, tagging, parsing, and more.
These libraries collectively empower data scientists to handle various tasks, from data preprocessing to advanced machine learning implementations.
ENJOY LEARNING 👍👍
❤4👍1
AI Engineers can be quite successful in this role without ever training anything.
This is how:
1/ Leveraging pre-trained LLMs: Select and tune existing LLMs for specific tasks. Don't start from scratch
2/ Prompt engineering: Craft effective prompts to optimize LLM performance without model modifications
3/ Implement Modern AI Solution Architectures: Design systems like RAG to enhance LLMs with external knowledge
Developers: The barrier to entry is lower than ever.
Focus on the solution's VALUE and connect AI components like you were assembling Lego! (Credits: Unknown)
This is how:
1/ Leveraging pre-trained LLMs: Select and tune existing LLMs for specific tasks. Don't start from scratch
2/ Prompt engineering: Craft effective prompts to optimize LLM performance without model modifications
3/ Implement Modern AI Solution Architectures: Design systems like RAG to enhance LLMs with external knowledge
Developers: The barrier to entry is lower than ever.
Focus on the solution's VALUE and connect AI components like you were assembling Lego! (Credits: Unknown)
❤4
Do these 4 things to 10x your responses while asking for referrals:
1. Be personal. (never use AI)
I get a ton of messages that are either written by AI or obviously copy and pasted to 100 people.
Be personal by mentioning something you have in common with the person you’re messaging or what you got out of one of their posts.
2. Have a specific job that you want to apply for and send the link.
“Can you look and see if there are any openings?” is incredibly rude and inconsiderate of the person’s time.
If you want them to help you with a referral, do the work for them by sending them the link, why you’re a good fit, and other needed info.
3. Reach out to people who are active on LinkedIn, but not content creators.
Everytime there’s an opening at my company, I get 50 messages asking for a referral. As much as I want to, I can’t refer everyone.
Therefore, look for those to connect with at a company you’re interested in that post occasionally on LinkedIn, but are not content creators.
These people will be active enough to see your message, but not have 3 dozen other messages asking for the same thing.
4. Build relationships way before you ask for a referral.
While I don’t do many referrals bc of how many inquiries I get, I’d be much more likely to refer someone who adds to the conversation by commenting on my posts, creates good posts themselves, and overall seems like a smart, nice person.
Doing this turns you from a complete stranger to a friend.
I know a lot of people are pressed for time on here, but building relationships is what networking is all about.
Do that effectively and your network may offer you referrals when there’s an opening.
Join this channel for more Interview Preparation Tips: https://t.iss.one/jobinterviewsprep
ENJOY LEARNING 👍👍
1. Be personal. (never use AI)
I get a ton of messages that are either written by AI or obviously copy and pasted to 100 people.
Be personal by mentioning something you have in common with the person you’re messaging or what you got out of one of their posts.
2. Have a specific job that you want to apply for and send the link.
“Can you look and see if there are any openings?” is incredibly rude and inconsiderate of the person’s time.
If you want them to help you with a referral, do the work for them by sending them the link, why you’re a good fit, and other needed info.
3. Reach out to people who are active on LinkedIn, but not content creators.
Everytime there’s an opening at my company, I get 50 messages asking for a referral. As much as I want to, I can’t refer everyone.
Therefore, look for those to connect with at a company you’re interested in that post occasionally on LinkedIn, but are not content creators.
These people will be active enough to see your message, but not have 3 dozen other messages asking for the same thing.
4. Build relationships way before you ask for a referral.
While I don’t do many referrals bc of how many inquiries I get, I’d be much more likely to refer someone who adds to the conversation by commenting on my posts, creates good posts themselves, and overall seems like a smart, nice person.
Doing this turns you from a complete stranger to a friend.
I know a lot of people are pressed for time on here, but building relationships is what networking is all about.
Do that effectively and your network may offer you referrals when there’s an opening.
Join this channel for more Interview Preparation Tips: https://t.iss.one/jobinterviewsprep
ENJOY LEARNING 👍👍
❤5
💻Napkins
🛠Napkins is an innovative open-source platform designed to automatically convert screenshots or web design prototypes into full-fledged application code.
🔰Users can upload an image of a website layout, and the system then uses the Llama 4 computer vision model and Together AI framework to generate source code based on React and Tailwind CSS.
🔗Links:
https://github.com/nutlope/napkins
🛠Napkins is an innovative open-source platform designed to automatically convert screenshots or web design prototypes into full-fledged application code.
🔰Users can upload an image of a website layout, and the system then uses the Llama 4 computer vision model and Together AI framework to generate source code based on React and Tailwind CSS.
🔗Links:
https://github.com/nutlope/napkins
❤2
7 Free Kaggle Micro-Courses for Data Science Beginners with Certification
Python
https://www.kaggle.com/learn/python
Pandas
https://www.kaggle.com/learn/pandas
Data visualization
https://www.kaggle.com/learn/data-visualization
Intro to sql
https://www.kaggle.com/learn/intro-to-sql
Advanced Sql
https://www.kaggle.com/learn/advanced-sql
Intro to ML
https://www.kaggle.com/learn/intro-to-machine-learning
Advanced ML
https://www.kaggle.com/learn/intermediate-machine-learning
#datascienceprojects #kaggle
Python
https://www.kaggle.com/learn/python
Pandas
https://www.kaggle.com/learn/pandas
Data visualization
https://www.kaggle.com/learn/data-visualization
Intro to sql
https://www.kaggle.com/learn/intro-to-sql
Advanced Sql
https://www.kaggle.com/learn/advanced-sql
Intro to ML
https://www.kaggle.com/learn/intro-to-machine-learning
Advanced ML
https://www.kaggle.com/learn/intermediate-machine-learning
#datascienceprojects #kaggle
❤1
20 Must-Know Statistics Questions for Data Analyst and Business Analyst Roles (With Detailed Answers)
1. What is the difference between descriptive and inferential statistics?
Descriptive statistics summarize and organize data (e.g., mean, median, mode).
Inferential statistics make predictions or inferences about a population based on a sample (e.g., hypothesis testing, confidence intervals).
2. Explain mean, median, and mode and when to use each.
Mean is the average; use when data is symmetrically distributed.
Median is the middle value; best when data has outliers.
Mode is the most frequent value; useful for categorical data.
3. What is standard deviation, and why is it important?
It measures data spread around the mean. A low value = less variability; high value = more spread. Important for understanding consistency and risk.
4. Define correlation vs. causation with examples.
Correlation: Two variables move together but don't cause each other (e.g., ice cream sales and drowning).
Causation: One variable directly affects another (e.g., smoking causes lung cancer).
5. What is a p-value, and how do you interpret it?
P-value measures the probability of observing results given that the null hypothesis is true. A small p-value (typically < 0.05) suggests rejecting the null.
6. Explain the concept of confidence intervals.
A range of values used to estimate a population parameter. A 95% CI means there's a 95% chance the true value falls within the range.
7. What are outliers, and how can you handle them?
Outliers are extreme values differing significantly from others. Handle using:
Removal (if due to error)
Transformation
Capping (e.g., winsorizing)
8. When would you use a t-test vs. a z-test?
T-test: Small samples (n < 30) and unknown population standard deviation.
Z-test: Large samples and known standard deviation.
9. What is the Central Limit Theorem (CLT), and why is it important?
CLT states that the sampling distribution of the sample mean approaches a normal distribution as sample size grows, regardless of population distribution. Essential for inference.
10. Explain the difference between population and sample.
Population: Entire group of interest.
Sample: Subset used for analysis. Inference is made from the sample to the population.
11. What is regression analysis, and what are its key assumptions?
Predicts a dependent variable using one or more independent variables.
Assumptions: Linearity, independence, homoscedasticity, no multicollinearity, normality of residuals.
12. How do you calculate probability, and why does it matter in analytics?
Probability = (Favorable outcomes) / (Total outcomes).
Critical for risk estimation, decision-making, and predictions.
13. Explain the concept of Bayes’ Theorem with a practical example.
Bayes’ updates the probability of an event based on new evidence:
P(A|B) = [P(B|A) * P(A)] / P(B)
Example: Calculating disease probability given a positive test result.
14. What is an ANOVA test, and when should it be used?
ANOVA (Analysis of Variance) compares means across 3+ groups to see if at least one differs.
Use when comparing more than two groups.
15. Define skewness and kurtosis in a dataset.
Skewness: Measure of asymmetry (positive = right-skewed, negative = left).
Kurtosis: Measure of tail thickness (high kurtosis = heavy tails, outliers).
16. What is the difference between parametric and non-parametric tests?
Parametric: Assumes data follows a distribution (e.g., t-test).
Non-parametric: No assumptions; use with skewed or ordinal data (e.g., Mann-Whitney U).
17. What are Type I and Type II errors in hypothesis testing?
Type I error: False positive (rejecting a true null).
Type II error: False negative (failing to reject a false null).
18. How do you handle missing data in a dataset?
Methods:
Deletion (listwise or pairwise)
Imputation (mean, median, mode, regression)
Advanced: KNN, MICE
1. What is the difference between descriptive and inferential statistics?
Descriptive statistics summarize and organize data (e.g., mean, median, mode).
Inferential statistics make predictions or inferences about a population based on a sample (e.g., hypothesis testing, confidence intervals).
2. Explain mean, median, and mode and when to use each.
Mean is the average; use when data is symmetrically distributed.
Median is the middle value; best when data has outliers.
Mode is the most frequent value; useful for categorical data.
3. What is standard deviation, and why is it important?
It measures data spread around the mean. A low value = less variability; high value = more spread. Important for understanding consistency and risk.
4. Define correlation vs. causation with examples.
Correlation: Two variables move together but don't cause each other (e.g., ice cream sales and drowning).
Causation: One variable directly affects another (e.g., smoking causes lung cancer).
5. What is a p-value, and how do you interpret it?
P-value measures the probability of observing results given that the null hypothesis is true. A small p-value (typically < 0.05) suggests rejecting the null.
6. Explain the concept of confidence intervals.
A range of values used to estimate a population parameter. A 95% CI means there's a 95% chance the true value falls within the range.
7. What are outliers, and how can you handle them?
Outliers are extreme values differing significantly from others. Handle using:
Removal (if due to error)
Transformation
Capping (e.g., winsorizing)
8. When would you use a t-test vs. a z-test?
T-test: Small samples (n < 30) and unknown population standard deviation.
Z-test: Large samples and known standard deviation.
9. What is the Central Limit Theorem (CLT), and why is it important?
CLT states that the sampling distribution of the sample mean approaches a normal distribution as sample size grows, regardless of population distribution. Essential for inference.
10. Explain the difference between population and sample.
Population: Entire group of interest.
Sample: Subset used for analysis. Inference is made from the sample to the population.
11. What is regression analysis, and what are its key assumptions?
Predicts a dependent variable using one or more independent variables.
Assumptions: Linearity, independence, homoscedasticity, no multicollinearity, normality of residuals.
12. How do you calculate probability, and why does it matter in analytics?
Probability = (Favorable outcomes) / (Total outcomes).
Critical for risk estimation, decision-making, and predictions.
13. Explain the concept of Bayes’ Theorem with a practical example.
Bayes’ updates the probability of an event based on new evidence:
P(A|B) = [P(B|A) * P(A)] / P(B)
Example: Calculating disease probability given a positive test result.
14. What is an ANOVA test, and when should it be used?
ANOVA (Analysis of Variance) compares means across 3+ groups to see if at least one differs.
Use when comparing more than two groups.
15. Define skewness and kurtosis in a dataset.
Skewness: Measure of asymmetry (positive = right-skewed, negative = left).
Kurtosis: Measure of tail thickness (high kurtosis = heavy tails, outliers).
16. What is the difference between parametric and non-parametric tests?
Parametric: Assumes data follows a distribution (e.g., t-test).
Non-parametric: No assumptions; use with skewed or ordinal data (e.g., Mann-Whitney U).
17. What are Type I and Type II errors in hypothesis testing?
Type I error: False positive (rejecting a true null).
Type II error: False negative (failing to reject a false null).
18. How do you handle missing data in a dataset?
Methods:
Deletion (listwise or pairwise)
Imputation (mean, median, mode, regression)
Advanced: KNN, MICE
❤2
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❤2
Lists 🆚 Tuples 🆚 Dictionaries
What's the difference?
Lists are mutable.
Tuples are immutable.
Dictionaries are associative.
When should you use each?
Lists:
⟶ When you want to add or remove elements
⟶ When you want to sort elements
⟶ When you want to slice elements
Tuples:
⟶ When you want a constant object
⟶ When you want to send multiple in a function
⟶ When you want to return multiple from a function
Dictionaries:
⟶ When you want to map keys to values
⟶ When you want to loop over the keys
⟶ When you want to validate if key exists
Now, pick your weapon of mass data analysis and become a Python pro!
Python Interview Q&A: https://topmate.io/coding/898340
Like for more ❤️
ENJOY LEARNING 👍👍
What's the difference?
Lists are mutable.
Tuples are immutable.
Dictionaries are associative.
When should you use each?
Lists:
⟶ When you want to add or remove elements
⟶ When you want to sort elements
⟶ When you want to slice elements
Tuples:
⟶ When you want a constant object
⟶ When you want to send multiple in a function
⟶ When you want to return multiple from a function
Dictionaries:
⟶ When you want to map keys to values
⟶ When you want to loop over the keys
⟶ When you want to validate if key exists
Now, pick your weapon of mass data analysis and become a Python pro!
Python Interview Q&A: https://topmate.io/coding/898340
Like for more ❤️
ENJOY LEARNING 👍👍
❤5