Alex Mirugwe has completed

# Exploring and Analyzing Data in Python

4 hours
4,150 XP

## Course Description

How do we get from data to answers? Exploratory data analysis is a process for exploring datasets, answering questions, and visualizing results. This course presents the tools you need to clean and validate data, to visualize distributions and relationships between variables, and to use regression models to predict and explain. You'll explore data related to demographics and health, including the National Survey of Family Growth and the General Social Survey. But the methods you learn apply to all areas of science, engineering, and business. You'll use Pandas, a powerful library for working with data, and other core Python libraries including NumPy and SciPy, StatsModels for regression, and Matplotlib for visualization. With these tools and skills, you will be prepared to work with real data, make discoveries, and present compelling results.

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1. 1

### Read, clean, and validate

Free

The first step of almost any data project is to read the data, check for errors and special cases, and prepare data for analysis. This is exactly what you'll do in this chapter, while working with a dataset obtained from the National Survey of Family Growth.

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DataFrames and Series
50 xp
50 xp
Exploring the NSFG data
100 xp
Clean and Validate
50 xp
Validate a variable
50 xp
Clean a variable
100 xp
Compute a variable
100 xp
Filter and visualize
50 xp
Make a histogram
100 xp
Compute birth weight
100 xp
Filter
100 xp
2. 2

### Distributions

In the first chapter, having cleaned and validated your data, you began exploring it by using histograms to visualize distributions. In this chapter, you'll learn how to represent distributions using Probability Mass Functions (PMFs) and Cumulative Distribution Functions (CDFs). You'll learn when to use each of them, and why, while working with a new dataset obtained from the General Social Survey.

3. 3

### Relationships

Up until this point, you've only looked at one variable at a time. In this chapter, you'll explore relationships between variables two at a time, using scatter plots and other visualizations to extract insights from a new dataset obtained from the Behavioral Risk Factor Surveillance Survey (BRFSS). You'll also learn how to quantify those relationships using correlation and simple regression.

4. 4

### Multivariate Thinking

Explore multivariate relationships using multiple regression to describe non-linear relationships and logistic regression to explain and predict binary variables.

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Datasets

National Survey of Family Growth (NSFG)General Social Survey (GSS)Behavioral Risk Factor Surveillance System (BRFSS)

Collaborators

Allen Downey

Professor, Olin College

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