Beginner Quiz on ML and Python Basics

How do you handle missing or corrupted data in a dataset?

• Drop missing rows or columns

• Replace missing values with Mean/Median/

  Mode

• Assign a unique category to missing values

• All of the above

Which of the options contain the following lines?

import pandas as pd

df = pd.read_csv("filename.csv")

df.head()

• Loading a dataset into python environment

• See the first five rows of a data frame in Python

• Checking the class of each variable in a pandas DataFrame

• Code to see the dimensions of a data frame in Python

• Function used to find missing values in a pandas DataFrame

Check/Click all which uses Machine Learning below

• Prediction

• Image Recognition

• Facial Recognition

• Feeding the newborn

What is the application of machine learning methods to a large database called?

• Big data computing

• Data Mining

• Artificial Intelligence

• Internet of Things

Machine learning is a subset of which of the following

• Deep Learning

• Data Learning

• Artificial Intelligence

• None of the above

Which of the following are common classes of problems in machine learning?

• Regression

• Classification

• Clustering

• All of the above

Which of the following machine learning techniques helps in detecting the outliers in data?

• Anomaly detection

• Classification

• Clustering

• All of the above

Answer explanation

The machine learning algorithm which helps in detecting the outliers is known as anomaly detection.

Find the value of a,b, c in the given code:

a, b = c = 2 + 2, "Hello"

• a = 4

  b = "Hello"

  c = Null

• a = 4, "Hello"

  b = 4, "Hello"

  c = 4, "Hello"

• a = 2

  b = 4, "Hello"

  c = 4, "Hello"

• a=4

  b = "Hello"

  c = 4, "Hello"

lst = [ 1, 2, 3 ]

lst.append([ 5, 6, 7, 8, 9, 10 ])

print(len(lst))

• 9

• 4

• 3

• Error

What will be the output for the follwing code?

import array as arr

Array_d=arr.array('i',[1,2,3,4,5])

print(Array_d[::-1])

• [1, 2, 3, 4, 5]

• Compile time error

• 5,4,3,2,1

• [5]