Friday Night Quiz 1 by Sayed Ahmed

Machine learning is a

• data science technique

• Rules are explicitly programmed

• Data is input to train an algorithm

• Historical answers are input

Which one is correct ?

• Deep Learning — A Technique for Implementing Machine Learning

• Artificial Intelligence — A Technique for Implementing Machine Learning

• Machine Learning — An Approach to Achieve Artificial Intelligence

Which one is correct ?

• A vector is simply an array of numbers

• Row = feature / entity / attribute

• output / prediction = independent variable

• column = attribute / feature

What options are true for One hot encoding ...

• It can prevent unnecessary ordering category

• for each property a field has to be removed from the table.

• this approach is that it implicitly assumes an order across the categories

Which statements are true ?

• An algorithm is used to train a model

• algorithms are the specific representations learned from data

• Algorithm is the result of using trained model

• an algorithm becomes a model when it learns the value of coefficient/weight

Select correct answers ?

• in Simple Linear regression it has single input variable

• cost function is used to calculate the accuracy

• "col-linear variables" means one input variable can be accurately predicted by the other

• Linear regression is very sensitive to the distance among data points, so it's always a good idea to normalize or standardize the data