Extras

BASIC INFORMATION R (open source language) is successor of S (proprietary language)  Like Python use # for comments Use Ctrl + Enter to run the current line OR select multiple lines and press Ctrl + Enter Ctrl + L to clear console in R studio How to print variable? use print(variable)   → CAN only print 1 object at a time OR select variable and hit Ctrl + Enter Put things in () to print while doing assigning (x < -  5)   → makes x=5 and prints x  x < -  5    → only makes x=5 Use View() for better visualisaion (for matrix or data frame) Variable name can have {letters, number, . , _ } But can start only with letter or . If printing multiple things on same line USE ; (semicolon) Eg.- a <- 10; b <- 20 Write (TRUE & FALSE) or (T & F) → but True or true are both wrong Can store string in " " or ' ' single-quoted strings can’t contain single quotes Similarly, double-quoted string can’t contain double quotes '...

Latex Where to edit  — Can be accessed online through the  “Overleaf”  website. File format  —  .tex \documentclass[]{article} --> Use \documentclass{...} to choose class \begin{document} use exam or beemer (for slides) instead of article ..... \end{document} use [] for Optional arguments -> eg- font size: [12pt] For title -> use \title{title_name} and Close title using \maketitle Packages  — load them right after  \documentclass : \usepackage{amsmath}  —  for equations \usepackage{graphicx}  —  to insert figures Equations & figures Use  \begin{equation} ... \end{equation}  inside body Figure skeleton: \begin{figure} \centering \includegraphics[width=\textwidth]{image_name} \caption{...} \end{figure} Paragraphs  — start new paragraph by  leaving an empty line Graphic adjustments \includegraphics[width=\textwidth]{image_name}  — scale to text...

Life Hacks Sm s 139 - if seat occupied by someone se at <PNR number> <Seat number> occupied by unknown passenger Complaint against bribe / corruption => 9431005682 / 0612-2235566, 2235588 Telecommunication Issues like SIM, mobile lost, unknown calls VID (Virtual ID) - used for authentication / e-KYC service instead of Aadhaar Number Aadhaar number can never be derived from VID → highly secure Can generate or retrieve VID from  here If make new VID → old one is deleted (must wait 1 day to create new one) Dandruff Issue - Ginger Juice + lemon + mustard oil + shampoo + water Ice Skate Quick Tutorial               Remove ring or anything tightly stuck from hands Jeans fitting tips without wearing Crazy Websites/Apps Uncle Delivery -  courier services within city Quick Ride  - shared cab/taxi at very cheap rate Popeye / KFC  - chicken related items turboscribe.ai  - transcribe to English / create SRT file from video /...

Data Analyst  -  uses technical skills to generate informative insights which helps in the decision-making processes. Key Skills - Data visualization, presentation skills, MS Excel, SQL, R or Python use data to find patterns and correlations + build models to see how data responds to his models. What is likely to happen in the future? + What do we need to do?  Business Analyst  -  uses knowledge + experience + insights generated by data analyst => take decisions that affect the business Key Skills: -  Critical thinking, Problem-solving, Communication and Process improvement, understand organization’s objectives and procedures to analyze performance, identify inefficiencies and propose and implement solutions.  They must have at least a working knowledge of the technology involved in analysis. presents conclusion of the final analyzed data set. What has happened? + What is happening right now? Advantage of data driven decision Risk assessment - ...

Bitcoin resources   →   Youtube resource        Learning Bitcoin from CLI APK (Android Package Kit)  - file format used by Android to install apps has all components of app and packaged in single apk → code, resources, assets Like .exe are executables  on Windows → APKs are for Android Mod APK (Modified APK) - altered version of original Android app Sideloading - installing apps on device from sources other than official app store Used for apps not available on Play Store or for beta versions XAPK (extended Android package kit)  -  APK file + OBB files + graphics + media compressed for easy distribution of large apps / heavy games for android not officially supported by Android → special installers are needed Manually, users can extract XAPK and place OBB files in respective folder OBB (Opaque Binary Blob) files  - extra data files used by some Android apps to  store large assets like graphics, media files, ...