BigData 2

What first step of analysis should a data analyst or data scientist perform after getting some cleaned data ?

• Cognitive analysis

• Diagnostic analysis

• Prescriptive analytics

• Descriptive analytics

How many steps does EDA contain ?

Answer explanation

What type of data exists ?

• Categorical

• Numerical

• Integer

• Binary

What type of methods can be used to do some forecasting ?

• Exponential Smoothie

• Facebook Morpheus

• Exponential Smoothing

• Facebook Prophet

How to decide which algorithm to use in a specific context

• By doing some math to try to find out which formula is better

• By experimenting with the data and all the different types of algorithms

• By comparing the error between the algorithm and the real values

• A litle bit of all the above

• None of the above

What is the bottom up approach ?

• A method to get easility at the top of a hierarchy

• A method to forecast specificaly royalty

• A method to reconcialiate different forecasts

What are the different type of ML methods?

• Data Science

• Supervised Machine Learning

• Unsupervised Machine Learning

• Reinforcement learning

• Artificial Intelligence

What does supervised machine learning mean ?

• That a human needs to prompt the machine to do what he wants

• That a human need to feed the machine with labeled information

• That a human needs to stay close to the machine in case it needs the answer

• That a human needs to let the machine do its job

I need to distinguish between different type of picture the one representing a lion and the one representing an elephant. What method should I use ?

• Supervised Machine Learning

• Unsupervised Machine Learning

• Reinforcement Learning

• Do you really need to do that ? I mean theoretically speaking a lion and an elephant are really differents. I guess you can just distinguish them with your own eyes