Journey towards Advanced Analytics

Which is true for practical data?

• 
• 
• 
• 

Data Science is to insights, Machine Learning is to predictions. AI is to ______

• actions

• large scale predictions

• automations

• revolution

Mostly used python library in Data processing?

• scikit-learn

• numpy

• matplotlib

• pandas

Which database has schema?

• Hbase (Hadoop)

• Redis

• MongoDB

• PostgreSQL

Which is NOT a specialized BI tool?

• Excel

• Power-BI

• Tableau

• Qlik sense

Where do Data Analyst(DA) and Data Scientist(DS) differ?

• No difference; same role

• DS - research questions & insights , predictions

  DA - only reports & insights

• DA analyses data but DS only develops prediction models

• DA fetches data, DS doesn't fetch data

Difference between Machine learning(ML) and Deep learning(DL) ?

• DL is part of AI where ML is not.

• ML mimics human brain ; DL can't

• ML needs feature engineering where DL doesn't

• Both are basically same

You have a task to do churn prediction of users (yes/no). Which algorithm will you use in base line model selection?

• 1. XGBoost

• 2. K-means Clustering

• None

• Both 1 & 2

Which is best use of Clustering?

• Market segmentation

• Sales forecasting

• Fraud prediction

• Anomaly detection

You need to write a SQL query , fetch data, manipulate them and e-mail to clients. which should you use for efficiency?

• PHP

• Java

• SQL

• Python