Welcome to Tech Jroshan โ your one-stop destination to learn Data Analysis, Data Science, Python, SQL, Machine Learning, Deep Learning, Generative AI, and Agentic AI from scratch to advanced!
This channel is dedicated to helping students, beginners, freshers, and career switchers build real skills and land high-paying jobs in the tech & AI industry.
Here youโll learn:
๐ Data Analysis:
SQL โข Excel โข Python โข Power BI โข EDA โข Dashboards
๐ Data Science:
Numpy โข Pandas โข Statistics โข ML โข Feature Engineering
๐ DL:
Neural Networks โข TensorFlow โข Keras โข PyTorch โข Computer Vision
๐ AI & Automation:
Generative AI โข Agentic AI โข LLMs
๐ Career Guidance:
Roadmaps โข Portfolio projects โข Resume tips โข Interview preparation
If your goal is to become a Data Analyst, Data Scientist this channel will guide you step-by-step with roadmaps, tutorials, projects, and real-world explanations.
๐ Subscribe now and upgrade your tech career!
Instagram: @tech_jroshan
YouTube: @tech_jroshan
Tech - jroshan
Correlation = 0 means:
A) ๐นNo relationship
B) ๐นPerfect relationship
C) ๐นStrong non-linear
D) ๐น Weak linear
Why Feature Engineering
youtube.com/shorts/cGIebgSJ7L...
Machine Learning Over- fitting vs Under-Fitting
youtube.com/shorts/cNKtEshr59...
Bias- Variance Tradeoff
youtube.com/shorts/K4EoxbWMoA...
Python Complete Roadmap
https://youtu.be/ugn5lbCyfs4?feature=...
SQL Leet Code Questions
https://youtu.be/qKTo8V7QycM?feature=...
Data Science Roadmap
https://youtu.be/tseiCVfAI3g?feature=...
Python Operators
youtube.com/shorts/I-1UkDkv-T...
Data analysis to data science
https://youtu.be/JkNd2qEX7gM
Life experiences share
youtube.com/shorts/BxLzgL7wXr...
Sql top interview questions
https://youtu.be/PNZ-uWdJULY
Why Companies need data base or kaha store karti hai
youtube.com/shorts/5EOrWdHS5Y...
Coding is important
youtube.com/shorts/aXCAhGZoo6...
Data science is easy or hard
youtube.com/shorts/g2mZkgt4VO...
Python is easy
youtube.com/shorts/6hSPAeaUOq...
Customer did not make any transition 1581
https://youtu.be/aBkUzZjkFi0
Leet code 1667
youtube.com/shorts/M4evfrcRlr...
Leet code 1068
youtube.com/shorts/qw_AVC8ggj...
๐ฅ Join Groups for the latest Update and Notes:-
whatsapp.com/channel/0029Va53iL3D8SE74GZFsz3i
๐ฏ Test Your SQL Skills โ Free Quiz!
forms.gle/Afux5noATe5qRgB9A
๐Join my YouTube channel for in-depth discussions
youtube.com/@tech_jroshan
๐let's build a strong professional community together. Connect now!
www.linkedin.com/in/roshan-jha-tech
Please ping your questions or query ๐ฅ
#Python #SQL #DataAnalysis #DataScience #LeetCode #ProblemSolving #Statistics #InterviewQuestions #MachineLearningEngineering
1 day ago | [YT] | 1
View 0 replies
Tech - jroshan
Histogram is used to show:
A) ๐นCategories
B) ๐นFrequency distribution
C) ๐นTrends
D) ๐นCorrelation
1. ๐นPython Complete Roadmap
https://youtu.be/ugn5lbCyfs4?feature=...
2. ๐นSQL Leet Code Questions
https://youtu.be/qKTo8V7QycM?feature=...
3. ๐น Data Science Roadmap
https://youtu.be/tseiCVfAI3g?feature=...
4. ๐นPython Operators
youtube.com/shorts/I-1UkDkv-T...
Data analysis to data science
https://youtu.be/JkNd2qEX7gM
Life experiences share
youtube.com/shorts/BxLzgL7wXr...
Sql top interview questions
https://youtu.be/PNZ-uWdJULY
Why Companies need data base or kaha store karti hai
youtube.com/shorts/5EOrWdHS5Y...
Coding is important
youtube.com/shorts/aXCAhGZoo6...
Data science is easy or hard
youtube.com/shorts/g2mZkgt4VO...
Python is easy
youtube.com/shorts/6hSPAeaUOq...
Customer did not make any transition 1581
https://youtu.be/aBkUzZjkFi0
Leet code 1667
youtube.com/shorts/M4evfrcRlr...
Leet code 1068
youtube.com/shorts/qw_AVC8ggj...
๐ฅ Join Groups for the latest Update and Notes:-
whatsapp.com/channel/0029Va53iL3D8SE74GZFsz3i
๐ฏ Test Your SQL Skills โ Free Quiz!
forms.gle/Afux5noATe5qRgB9A
๐Join my YouTube channel for in-depth discussions
youtube.com/@tech_jroshan
๐let's build a strong professional community together. Connect now!
www.linkedin.com/in/roshan-jha-tech
Please ping your questions or query ๐ฅ
#Python #SQL #DataAnalysis #DataScience #LeetCode #ProblemSolving #Statistics #InterviewQuestions #MachineLearningEngineering
4 days ago | [YT] | 2
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Tech - jroshan
Z-score tells you:
A) ๐ธDistance from mean in standard deviations
B) ๐ธDistance from median
C) ๐ธDistance from mode
D) ๐ธ Data type
1. ๐นPython Complete Roadmap
https://youtu.be/ugn5lbCyfs4?feature=...
2. ๐นSQL Leet Code Questions
https://youtu.be/qKTo8V7QycM?feature=...
3. ๐น Data Science Roadmap
https://youtu.be/tseiCVfAI3g?feature=...
4. ๐นPython Operators
youtube.com/shorts/I-1UkDkv-T...
Data analysis to data science
https://youtu.be/JkNd2qEX7gM
Life experiences share
youtube.com/shorts/BxLzgL7wXr...
Sql top interview questions
https://youtu.be/PNZ-uWdJULY
Why Companies need data base or kaha store karti hai
youtube.com/shorts/5EOrWdHS5Y...
Coding is important
youtube.com/shorts/aXCAhGZoo6...
Data science is easy or hard
youtube.com/shorts/g2mZkgt4VO...
Python is easy
youtube.com/shorts/6hSPAeaUOq...
Customer did not make any transition 1581
https://youtu.be/aBkUzZjkFi0
Leet code 1667
youtube.com/shorts/M4evfrcRlr...
Leet code 1068
youtube.com/shorts/qw_AVC8ggj...
๐ฅ Join Groups for the latest Update and Notes:-
whatsapp.com/channel/0029Va53iL3D8SE74GZFsz3i
๐ฏ Test Your SQL Skills โ Free Quiz!
forms.gle/Afux5noATe5qRgB9A
๐Join my YouTube channel for in-depth discussions
youtube.com/@tech_jroshan
๐let's build a strong professional community together. Connect now!
www.linkedin.com/in/roshan-jha-tech
Please ping your questions or query ๐ฅ
#Python #SQL #DataAnalysis #DataScience #LeetCode #ProblemSolving #Statistics #InterviewQuestions #MachineLearningEngineering
6 days ago | [YT] | 2
View 0 replies
Tech - jroshan
What happens if p-value < 0.05?
A)๐น Accept null hypothesis
B)๐น Reject null hypothesis
C)๐น p-value invalid
D)๐น Increase sample size
1. ๐นPython Complete Roadmap
https://youtu.be/ugn5lbCyfs4?feature=...
2. ๐นSQL Leet Code Questions
https://youtu.be/qKTo8V7QycM?feature=...
3. ๐น Data Science Roadmap
https://youtu.be/tseiCVfAI3g?feature=...
4. ๐นPython Operators
youtube.com/shorts/I-1UkDkv-T...
Data analysis to data science
https://youtu.be/JkNd2qEX7gM
Life experiences share
youtube.com/shorts/BxLzgL7wXr...
Sql top interview questions
https://youtu.be/PNZ-uWdJULY
Why Companies need data base or kaha store karti hai
youtube.com/shorts/5EOrWdHS5Y...
Coding is important
youtube.com/shorts/aXCAhGZoo6...
Data science is easy or hard
youtube.com/shorts/g2mZkgt4VO...
Python is easy
youtube.com/shorts/6hSPAeaUOq...
Customer did not make any transition 1581
https://youtu.be/aBkUzZjkFi0
Leet code 1667
youtube.com/shorts/M4evfrcRlr...
Leet code 1068
youtube.com/shorts/qw_AVC8ggj...
๐ฅ Join Groups for the latest Update and Notes:-
whatsapp.com/channel/0029Va53iL3D8SE74GZFsz3i
๐ฏ Test Your SQL Skills โ Free Quiz!
forms.gle/Afux5noATe5qRgB9A
๐Join my YouTube channel for in-depth discussions
youtube.com/@tech_jroshan
๐let's build a strong professional community together. Connect now!
www.linkedin.com/in/roshan-jha-tech
Please ping your questions or query ๐ฅ
#Python #SQL #DataAnalysis #DataScience #LeetCode #ProblemSolving #Statistics #InterviewQuestions #MachineLearningEngineering
1 week ago | [YT] | 1
View 0 replies
Tech - jroshan
What is the difference between np.copy() and np.view()?
A.๐น copy() creates new data, view() creates a shallow reference
B.๐นcopy() creates a shallow reference, view() creates deep copy
C.๐น Both create new independent arrays
D.๐น Both point to same memory
1. ๐นPython Complete Roadmap
https://youtu.be/ugn5lbCyfs4?feature=...
2. ๐นSQL Leet Code Questions
https://youtu.be/qKTo8V7QycM?feature=...
3. ๐น Data Science Roadmap
https://youtu.be/tseiCVfAI3g?feature=...
4. ๐นPython Operators
youtube.com/shorts/I-1UkDkv-T...
Data analysis to data science
https://youtu.be/JkNd2qEX7gM
Life experiences share
youtube.com/shorts/BxLzgL7wXr...
Sql top interview questions
https://youtu.be/PNZ-uWdJULY
Why Companies need data base or kaha store karti hai
youtube.com/shorts/5EOrWdHS5Y...
Coding is important
youtube.com/shorts/aXCAhGZoo6...
Data science is easy or hard
youtube.com/shorts/g2mZkgt4VO...
Python is easy
youtube.com/shorts/6hSPAeaUOq...
Customer did not make any transition 1581
https://youtu.be/aBkUzZjkFi0
Leet code 1667
youtube.com/shorts/M4evfrcRlr...
Leet code 1068
youtube.com/shorts/qw_AVC8ggj...
๐ฅ Join Groups for the latest Update and Notes:-
whatsapp.com/channel/0029Va53iL3D8SE74GZFsz3i
๐ฏ Test Your SQL Skills โ Free Quiz!
forms.gle/Afux5noATe5qRgB9A
๐Join my YouTube channel for in-depth discussions
youtube.com/@tech_jroshan
๐let's build a strong professional community together. Connect now!
www.linkedin.com/in/roshan-jha-tech
Please ping your questions or query ๐ฅ
#Python #SQL #DataAnalysis #DataScience #LeetCode #ProblemSolving #Statistics #InterviewQuestions #MachineLearningEngineering
1 week ago | [YT] | 2
View 0 replies
Tech - jroshan
Which is not a measure of central tendency?
A) ๐นMean
B) ๐นMedian
C) ๐นIQR
D) ๐นMode
1. ๐นPython Complete Roadmap
https://youtu.be/ugn5lbCyfs4?feature=...
2. ๐นSQL Leet Code Questions
https://youtu.be/qKTo8V7QycM?feature=...
3. ๐น Data Science Roadmap
https://youtu.be/tseiCVfAI3g?feature=...
4. ๐นPython Operators
youtube.com/shorts/I-1UkDkv-T...
Data analysis to data science
https://youtu.be/JkNd2qEX7gM
Life experiences share
youtube.com/shorts/BxLzgL7wXr...
Sql top interview questions
https://youtu.be/PNZ-uWdJULY
Why Companies need data base or kaha store karti hai
youtube.com/shorts/5EOrWdHS5Y...
Coding is important
youtube.com/shorts/aXCAhGZoo6...
Data science is easy or hard
youtube.com/shorts/g2mZkgt4VO...
Python is easy
youtube.com/shorts/6hSPAeaUOq...
Customer did not make any transition 1581
https://youtu.be/aBkUzZjkFi0
Leet code 1667
youtube.com/shorts/M4evfrcRlr...
Leet code 1068
youtube.com/shorts/qw_AVC8ggj...
๐ฅ Join Groups for the latest Update and Notes:-
whatsapp.com/channel/0029Va53iL3D8SE74GZFsz3i
๐ฏ Test Your SQL Skills โ Free Quiz!
forms.gle/Afux5noATe5qRgB9A
๐Join my YouTube channel for in-depth discussions
youtube.com/@tech_jroshan
๐let's build a strong professional community together. Connect now!
www.linkedin.com/in/roshan-jha-tech
Please ping your questions or query ๐ฅ
#Python #SQL #DataAnalysis #DataScience #LeetCode #ProblemSolving #Statistics #InterviewQuestions #MachineLearningEngineering
1 week ago | [YT] | 2
View 0 replies
Tech - jroshan
๐ง๐ฟ๐ฎ๐ถ๐ป๐ถ๐ป๐ด ๐๐ฎ๐๐ฎ ๐๐ ๐ง๐ฒ๐๐๐ถ๐ป๐ด ๐๐ฎ๐๐ฎ ๐
๐จ๐ป๐ฑ๐ฒ๐ฟ๐ณ๐ถ๐๐๐ถ๐ป๐ด ๐๐ ๐ข๐๐ฒ๐ฟ๐ณ๐ถ๐๐๐ถ๐ป๐ด โ๏ธ
(๐ถ๐๐ ๐๐ ๐๐๐ ๐ด๐ถ๐บ๐ป ๐๐๐๐๐ ๐ด๐ณ ๐๐๐๐๐๐๐๐๐)
๐ด๐๐๐ ๐ด๐ณ ๐๐๐ ๐๐๐ ๐๐๐๐ ๐๐๐ ๐๐๐๐๐๐๐ ๐๐ ๐๐๐๐๐๐๐๐๐๐
B๐๐ ๐๐๐๐๐๐๐ ๐๐๐๐๐ ๐๐๐๐๐๐ ๐๐๐ ๐๐๐๐๐๐ ๐๐๐๐๐๐๐ .
๐ณ๐๐โ๐ ๐๐๐ ๐๐๐๐ ๐
๐ง ๐ป๐๐๐๐๐๐๐ ๐ซ๐๐๐ ๐๐ ๐ป๐๐๐๐๐๐ ๐ซ๐๐๐
1. Training Data
- Used to teach the model
- Model learns patterns from this data
๐ Think: Study material
2. Testing Data
- Used to evaluate the model
- Never shown during training
๐ Think: Final exam
โ ๏ธ ๐ผ๐๐ ๐๐๐๐๐๐๐๐๐ ๐๐ ๐ถ๐๐๐๐๐๐๐๐๐๐
1. ๐ผ๐๐ ๐๐๐๐๐๐๐๐๐
- Model is too simple
- Fails on training data โ
- Fails on testing data โ
- ๐ง Meaning: Model didnโt learn enough
- Example:
- Linear model for complex data
2. ๐ถ๐๐๐๐๐๐๐๐๐๐
- Model is too complex
- Performs very well on training โ
- Performs poorly on testing โ
- ๐ง Meaning: Model memorized, not learned
- Example:
- Very deep model on small data
โ๏ธ๐ง๐ต๐ฒ ๐๐ผ๐ฎ๐น: ๐๐ผ๐ผ๐ฑ ๐๐ถ๐
1. Performs well on training โ
2. Performs well on testing โ
๐ This is where real ML works
๐ฏ One-Line Interview Answer
Underfitting means the model is too simple to learn patterns,
While overfitting means the model learns noise instead of general patterns.
๐ก ๐ญ๐๐๐๐ ๐ป๐๐๐๐๐๐
Machine Learning is not about
โ maximum accuracy on training data
โ๏ธ but generalization on unseen data
Thatโs the real intelligence.
#MachineLearning #DataScience #AI #MLBasics #Underfitting #Overfitting #TrainingData #TestingData #LearningInPublic #FreeResource #TechJroshan #CodeJroshan #InterviewQuestions
2 weeks ago | [YT] | 3
View 0 replies
Tech - jroshan
What reduces variance in a model?
A) ๐ธDropout
B) ๐ธRegularization
C) ๐ธMore data
D) ๐ธNormalization
1. ๐นPython Complete Roadmap
https://youtu.be/ugn5lbCyfs4?feature=...
2. ๐นSQL Leet Code Questions
https://youtu.be/qKTo8V7QycM?feature=...
3. ๐น Data Science Roadmap
https://youtu.be/tseiCVfAI3g?feature=...
4. ๐นPython Operators
youtube.com/shorts/I-1UkDkv-T...
Data analysis to data science
https://youtu.be/JkNd2qEX7gM
Life experiences share
youtube.com/shorts/BxLzgL7wXr...
Sql top interview questions
https://youtu.be/PNZ-uWdJULY
Why Companies need data base or kaha store karti hai
youtube.com/shorts/5EOrWdHS5Y...
Coding is important
youtube.com/shorts/aXCAhGZoo6...
Data science is easy or hard
youtube.com/shorts/g2mZkgt4VO...
Python is easy
youtube.com/shorts/6hSPAeaUOq...
Customer did not make any transition 1581
https://youtu.be/aBkUzZjkFi0
Leet code 1667
youtube.com/shorts/M4evfrcRlr...
Leet code 1068
youtube.com/shorts/qw_AVC8ggj...
๐ฅ Join Groups for the latest Update and Notes:-
whatsapp.com/channel/0029Va53iL3D8SE74GZFsz3i
๐ฏ Test Your SQL Skills โ Free Quiz!
forms.gle/Afux5noATe5qRgB9A
๐Join my YouTube channel for in-depth discussions
youtube.com/@tech_jroshan
๐let's build a strong professional community together. Connect now!
www.linkedin.com/in/roshan-jha-tech
Please ping your questions or query ๐ฅ
#Python #SQL #DataAnalysis #DataScience #LeetCode #ProblemSolving #Statistics #InterviewQuestions #MachineLearningEngineering
2 weeks ago | [YT] | 3
View 0 replies
Tech - jroshan
Skill upgrade ka real impact kab hota hai?
A) ๐ธSirf certificate lene se
B)๐ธ Jab resume colourful ho
C) ๐ธJab projects + proof dikhte hai
D) ๐ธJab HR bole โGoodโ
1. ๐นPython Complete Roadmap
https://youtu.be/ugn5lbCyfs4?feature=...
2. ๐นSQL Leet Code Questions
https://youtu.be/qKTo8V7QycM?feature=...
3. ๐น Data Science Roadmap
https://youtu.be/tseiCVfAI3g?feature=...
4. ๐นPython Operators
youtube.com/shorts/I-1UkDkv-T...
Data analysis to data science
https://youtu.be/JkNd2qEX7gM
Life experiences share
youtube.com/shorts/BxLzgL7wXr...
Sql top interview questions
https://youtu.be/PNZ-uWdJULY
Why Companies need data base or kaha store karti hai
youtube.com/shorts/5EOrWdHS5Y...
Coding is important
youtube.com/shorts/aXCAhGZoo6...
Data science is easy or hard
youtube.com/shorts/g2mZkgt4VO...
Python is easy
youtube.com/shorts/6hSPAeaUOq...
Customer did not make any transition 1581
https://youtu.be/aBkUzZjkFi0
Leet code 1667
youtube.com/shorts/M4evfrcRlr...
Leet code 1068
youtube.com/shorts/qw_AVC8ggj...
๐ฅ Join Groups for the latest Update and Notes:-
whatsapp.com/channel/0029Va53iL3D8SE74GZFsz3i
๐ฏ Test Your SQL Skills โ Free Quiz!
forms.gle/Afux5noATe5qRgB9A
๐Join my YouTube channel for in-depth discussions
youtube.com/@tech_jroshan
๐let's build a strong professional community together. Connect now!
www.linkedin.com/in/roshan-jha-tech
Please ping your questions or query ๐ฅ
#Python #SQL #DataAnalysis #DataScience #LeetCode #ProblemSolving #Statistics #InterviewQuestions #MachineLearningEngineering
2 weeks ago | [YT] | 2
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