Data Science & Machine Learning
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๐——๐—ฎ๐˜๐—ฎ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐˜๐—ถ๐˜€๐˜ ๐˜ƒ๐˜€. ๐——๐—ฎ๐˜๐—ฎ ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ๐—ฒ๐—ฟ ๐˜ƒ๐˜€. ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜€๐˜ ๐˜ƒ๐˜€. ๐— ๐—Ÿ ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ๐—ฒ๐—ฟ

๐——๐—ฎ๐˜๐—ฎ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐˜๐—ถ๐˜€๐˜

Think of them as data detectives.
โ†’ ๐…๐จ๐œ๐ฎ๐ฌ: Identifying patterns and building predictive models.
โ†’ ๐’๐ค๐ข๐ฅ๐ฅ๐ฌ: Machine learning, statistics, Python/R.
โ†’ ๐“๐จ๐จ๐ฅ๐ฌ: Jupyter Notebooks, TensorFlow, PyTorch.
โ†’ ๐†๐จ๐š๐ฅ: Extract actionable insights from raw data.
๐„๐ฑ๐š๐ฆ๐ฉ๐ฅ๐ž: Creating a recommendation system like Netflix.

๐——๐—ฎ๐˜๐—ฎ ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ๐—ฒ๐—ฟ

The architects of data infrastructure.
โ†’ ๐…๐จ๐œ๐ฎ๐ฌ: Developing data pipelines, storage systems, and infrastructure. โ†’ ๐’๐ค๐ข๐ฅ๐ฅ๐ฌ: SQL, Big Data technologies (Hadoop, Spark), cloud platforms.
โ†’ ๐“๐จ๐จ๐ฅ๐ฌ: Airflow, Kafka, Snowflake.
โ†’ ๐†๐จ๐š๐ฅ: Ensure seamless data flow across the organization.
๐„๐ฑ๐š๐ฆ๐ฉ๐ฅ๐ž: Designing a pipeline to handle millions of transactions in real-time.

๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜€๐˜

Data storytellers.
โ†’ ๐…๐จ๐œ๐ฎ๐ฌ: Creating visualizations, dashboards, and reports.
โ†’ ๐’๐ค๐ข๐ฅ๐ฅ๐ฌ: Excel, Tableau, SQL.
โ†’ ๐“๐จ๐จ๐ฅ๐ฌ: Power BI, Looker, Google Sheets.
โ†’ ๐†๐จ๐š๐ฅ: Help businesses make data-driven decisions.
๐„๐ฑ๐š๐ฆ๐ฉ๐ฅ๐ž: Analyzing campaign data to optimize marketing strategies.

๐— ๐—Ÿ ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ๐—ฒ๐—ฟ

The connectors between data science and software engineering.
โ†’ ๐…๐จ๐œ๐ฎ๐ฌ: Deploying machine learning models into production.
โ†’ ๐’๐ค๐ข๐ฅ๐ฅ๐ฌ: Python, APIs, cloud services (AWS, Azure).
โ†’ ๐“๐จ๐จ๐ฅ๐ฌ: Kubernetes, Docker, FastAPI.
โ†’ ๐†๐จ๐š๐ฅ: Make models scalable and ready for real-world applications. ๐„๐ฑ๐š๐ฆ๐ฉ๐ฅ๐ž: Deploying a fraud detection model for a bank.

๐—ช๐—ต๐—ฎ๐˜ ๐—ฃ๐—ฎ๐˜๐—ต ๐—ฆ๐—ต๐—ผ๐˜‚๐—น๐—ฑ ๐—ฌ๐—ผ๐˜‚ ๐—–๐—ต๐—ผ๐—ผ๐˜€๐—ฒ?

โ˜‘ Love solving complex problems?
โ†’ Data Scientist
โ˜‘ Enjoy working with systems and Big Data?
โ†’ Data Engineer
โ˜‘ Passionate about visual storytelling?
โ†’ Data Analyst
โ˜‘ Excited to scale AI systems?
โ†’ ML Engineer

Each role is crucial and in demandโ€”choose based on your strengths and career aspirations.

Whatโ€™s your ideal role?
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Which of the following methods is least affected by outliers?
Anonymous Quiz
22%
a) Min-Max Scaling
43%
b) Standardization (Z-score)
25%
c) Robust Scaler
10%
d) MaxAbs Scaler
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After applying StandardScaler, the mean of each feature becomes:
Anonymous Quiz
33%
a) 0
22%
b) 1
19%
c) The same as original
25%
d) Dependent on feature distribution
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Which scaling technique would be most suitable for K-Nearest Neighbors (KNN)?
Anonymous Quiz
13%
a) No scaling needed
51%
b) Min-Max Scaling or Standardization
25%
c) PCA
10%
d) Label Encoding
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Which scaler transforms features by removing the median and scaling by the interquartile range?
Anonymous Quiz
35%
a) StandardScaler
29%
b) MinMaxScaler
24%
c) RobustScaler
12%
d) Normalizer
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๐Ÿš€๐Ÿ‘‰Data Analytics skills and projects to add in a resume to get shortlisted

1. Technical Skills:
Proficiency in data analysis tools (e.g., Python, R, SQL).
Data visualization skills using tools like Tableau or Power BI.
Experience with statistical analysis and modeling techniques.

2. Data Cleaning and Preprocessing:
Showcase skills in cleaning and preprocessing raw data for analysis.
Highlight expertise in handling missing data and outliers effectively.

3. Database Management:
Mention experience with databases (e.g., MySQL, PostgreSQL) for data retrieval and manipulation.

4. Machine Learning:
If applicable, include knowledge of machine learning algorithms and their application in data analytics projects.

5. Data Storytelling:
Emphasize your ability to communicate insights effectively through data storytelling.

6. Big Data Technologies:
If relevant, mention experience with big data technologies such as Hadoop or Spark.

7. Business Acumen:
Showcase an understanding of the business context and how your analytics work contributes to organizational goals.

8. Problem-Solving:
Highlight instances where you solved business problems through data-driven insights.

9. Collaboration and Communication:
Demonstrate your ability to work in a team and communicate complex findings to non-technical stakeholders.

10. Projects:
List specific data analytics projects you've worked on, detailing the problem, methodology, tools used, and the impact on decision-making.

11. Certifications:
Include relevant certifications such as those from platforms like Coursera, edX, or industry-recognized certifications in data analytics.

12. Continuous Learning:
Showcase any ongoing education, workshops, or courses to display your commitment to staying updated in the field.

๐Ÿ’ผTailor your resume to the specific job description, emphasizing the skills and experiences that align with the requirements of the position you're applying for.
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Top Machine Learning Interview Questions ๐Ÿ‘†
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๐Ÿ”ฐ Take Screenshots using Python.
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2๏ธโƒฃ Which function is used to read an image in OpenCV?
Anonymous Quiz
18%
B) cv2.display()
48%
C) cv2.imread()
20%
D) cv2.readimg()
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4๏ธโƒฃ What key is commonly used to exit a video loop in OpenCV?
Anonymous Quiz
48%
A) ESC
13%
B) Enter
29%
C) q
10%
D) Spacebar
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5๏ธโƒฃ Which format does OpenCV use for image data internally?
Anonymous Quiz
8%
A) Lists
47%
B) NumPy arrays
15%
C) Dictionaries
30%
D) Pandas DataFrame
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Here are the answers for the above quizzes:

1๏ธโƒฃ What is the primary use of OpenCV?
โœ… B) Computer Vision & Image Processing

OpenCV is built for real-time computer vision tasks such as image processing, object detection, face recognition, and video analysis.

2๏ธโƒฃ Which function is used to read an image in OpenCV?
โœ… C) cv2.imread()

cv2.imread() loads an image from the specified file. It's the standard method for image reading in OpenCV.

3๏ธโƒฃ What does cv2.cvtColor() do?

B) Converts image color spacece

This function converts images from one color space to another, like BGR to GRAY or BGR to HS

4๏ธโƒฃ What key is commonly used to exit a video loop in OpenCV?

C) q

In many OpenCV examples, pressing the 'q' key breaks the loop and closes the video window using cv2.waitKey().

5๏ธโƒฃ Which format does OpenCV use for image data internalB) NumPy arraysarrays

OpenCV stores images as NumPy arrays, allowing powerful array-based operations for fast image processing

React โค๏ธ for more**
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