Data Wrangling(II): Munging, Tidy Data, and Working with ...

Data Wrangling(II): Munging,

Tidy Data, and Working with

Multiple Data Tables

Nicholas Mattei, Tulane University

CMPS3660 �C Introduction to Data Science �C Fall 2019



Many Thanks

Slides based off Introduction to Data Science from John P. Dickerson

Announcements

? Project1 and Milestone1 Updates

�C Reading really important here!

2

Next Couple of Lectures (Till Midterm)

? Tables in the Abstract

�C How, Why

�C Operations

? Principles of Tidy Data

? Tables in Pandas

? Tables in SQL and RMDBS

? 2 More Labs.

3

The Data LifeCycle

Data

Processing

Analysis,

Hypothesis

Testing,

& ML

Insight

&

Policy

Decision

To

d

ay

Data

Collection

Exploratory

Analysis

&

Data

Visualization

4

Types of Joins

?

?

?

In Pandas this is called a

FULL OUTTER JOIN!

?

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