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Top Questions People Ask About Pandas, NumPy, Matplotlib & Scikit-learn — Answered!

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 Whether you're a beginner or brushing up on your skills, these are the real-world questions Python learners ask most about key libraries in data science. Let’s dive in! 🐍 🐼 Pandas: Data Manipulation Made Easy 1. How do I handle missing data in a DataFrame? df.fillna( 0 ) # Replace NaNs with 0 df.dropna() # Remove rows with NaNs df.isna(). sum () # Count missing values per column 2. How can I merge or join two DataFrames? pd.merge(df1, df2, on= 'id' , how= 'inner' ) # inner, left, right, outer 3. What is the difference between loc[] and iloc[] ? loc[] uses labels (e.g., column names) iloc[] uses integer positions df.loc[ 0 , 'name' ] # label-based df.iloc[ 0 , 1 ] # index-based 4. How do I group data and perform aggregation? df.groupby( 'category' )[ 'sales' ]. sum () 5. How can I convert a column to datetime format? df[ 'date' ] = pd.to_datetime(df[ 'date' ]) ...
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6 IT skills you need to be successful in IoT (Internet of things) Career

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http://www.indeed.com/jobs?q=Internet+of+things&l=United+States&indpubnum=6634974704162507
[Jobs on IoT]
The following 6 skills needed to become successful in IoT career:

Business Intelligence: Collect, store, & analyze smart device data streams, sensor data
analysis, data center management, predictive analytics, and programming skills in
leading big data platforms

Information Security: Vulnerability assessment, PKI security, ethical hacking, wireless
network security, data ethics, and privacy policies

 UI/UX Design: Ability to develop effective, user-friendly interfaces, responsive web
design, and service design

Mobile Development: Knowledge of mobile apps that communicate with external
hardware and sensors

Hardware Engineering: Develop and install Wi-Fi™, Bluetooth®, and other connectivity
solutions, computer-aided design, micro-electromechanical systems engineering,
wireless sensor design, and quality assurance

Networking: Design, maintain, and optimize large-scale traffic across secure,
reliable, and redundant backbones that connect different destinations with knowledge
of typical wireless connections, EFID, and emerging wireless protocols

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