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All LessonsFree Lessons (6)

What is Data Science

The Buzzword "Data Science"Data Science Lifecycle Python for Data Science

Python Basics

Variables and Data Types

Conditional Statements

Packages and Modules

Exercise: Average of a List

Solution Review: Average of a List

Exercise: Factorial of a Number

Solution Review: Factorial of a Number

Handling Tabular Data in Python

Importing Data in CSV Files with Pandas Indexing and Selection Filtering Data Applying Functions to Data Aggregating Data Grouping Data Pivot Tables Plotting Data 1: Univariate Plots Plotting Data 2: Bivariate Plots Test Your Knowledge

Data Cleaning

Introduction to Data Cleaning Data Types Missing Values Duplicates Inconsistent Data Outliers Outlier Detection and Removal Exercise: Cleaning NYC Property Sales Solution Review: Cleaning NYC Property Sales

Exploratory Data Analysis

Introduction Analyzing Individual Quantities Exploring Categorical Quantities Exploring Numerical Quantities Correlation and Heatmaps Exercise: Exploring E-Commerce Solution Review: Exploring E-Commerce Business Example: RFM Analysis in Python

Statistical Inference

The Basics of Statistical Inference Confidence Intervals Hypothesis Testing One Sample t-Test Two Sample t-Test Paired t-Test

Predictive Models

A Simple Model Model Fitting on a Loss Function Gradient Descent Optimization with Gradient Descent Simple Linear Regression Multiple Linear Regression Evaluating Regression Models Logistic Regression Evaluating Logistic Regression Models Exercise: Churn Prediction Solution Review: Churn Prediction

Machine Learning

Why Machine Learning Machine Learning Pipeline Decision Trees Random Forests Support Vector Machines Ensembles: Bagging vs Boosting Clustering for Unsupervised Learning K-Means on Two-Dimensional Data K-Means on n-Dimensional Data Test your Knowledge Conclusion

Project

How to Predict the Traffic Volume Using Machine Learning

Fundamentals of Data Science

Data Science for Non-Programmers/

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Exercise: Average of a List

Exercise: Average of a List

This lesson will give an exercise to test you on your basic Python skills.

We'll cover the following...

Problem Statement

In this challenge, you must implement the average() function. It takes a list as a parameter and calculates the ...