Session 2 Quiz

A company is analyzing customer data to identify trends in purchase behavior. which of the following is not a step in the data analysis process?

• Data Gathering

• Data cleaning

• Data preprocessing

• Data modeling

Answer explanation

A data analyst is cleaning a dataset of customer addresses. Which of the following is NOT a common data cleaning task?

• identifying and removing duplicate records

• correcting typos and formatting errors

• Filling in missing values

• deleting irrelevant data

A data scientist is preprocessing a dataset of the sensor reading. which of the following is NOT a common data preprocessing task?

• Scaling the data

• Converting categorical data to numerical data

• Removing outliers

• Splitting the data into training and test sets

which of the following is NOT a step in data analysis process??

• Data gathering

• Data cleaning

• Data modeling

• Data visualization

Which of the following data visualization methods is best suited for showcasing the distribution of the data?

• Bar chart

• Pie chart

• Line chart

• Histogram

Which of the following data visualization methods is best suited for showing the relationship between two variables??

• Bar chart

• Pie chart

• Line chart

• Scatter plot

What is the extension of machine learning code ??

• .py

• .python

• .ipynb

• .jupyter

which of the following is NOT a type of Machine Learning ??

• Supervised Learning
• Unsupervised Learning
• Reinforcement Learning
• None of these

Which of the following is an example of reinforcement learning??

• smart mail sorter

• book recommendation system

• mechanical robotics

• Brain tumor detection

Mention the algorithm used in Unsupervised Machine learning.

• K-means Clustering
• Random Forest Classifier

• Logistic Regression
• Support Vector Machines