This course allows you to apply the SQL skills taught in “SQL for Data Science” to four increasingly complex and authentic data science inquiry case studies. We'll learn how to convert timestamps of all types to common formats and perform date/time calculations. We'll select and perform the optimal JOIN for a data science inquiry and clean data within an analysis dataset by deduping, running quality checks, backfilling, and handling nulls. We'll learn how to segment and analyze data per segment using windowing functions and use case statements to execute conditional logic to address a data science inquiry. We'll also describe how to convert a query into a scheduled job and how to insert data into a date partition. Finally, given a predictive analysis need, we'll engineer a feature from raw data using the tools and skills we've built over the course. The real-world application of these skills will give you the framework for performing the analysis of an AB test.
Data Wrangling, Analysis and AB Testing with SQL
proposé par
Université de Californie à Davis
À propos de ce cours
Ce que vous allez apprendre
Validate and clean a dataset
Assess and create datasets to answer your questions
Solve problems using SQL
Build a simple testing framework to touch on AB Testing
Compétences que vous acquerrez
A/B TestingQuery StringData AnalysisPredictive AnalyticsSQL
Programme du cours : ce que vous apprendrez dans ce cours
Semaine
15 heures pour terminer
Data of Unknown Quality
In this module, you will be able to create trustworthy analysis from a new set of data. You will be able to coalesce some nulls and identify unreliable data and discover reasons why data might be missing. You will also be able to answer ambiguous questions by defining new metrics.
12 vidéos (Total 85 min), 3 lectures, 2 quiz
12 vidéos
Course Introduction3 min
Introduction of Data of Unknown Quality1 min
Introduction to the Course Dataset10 min
Error Codes (Solution)13 min
Flexible Data Formats6 min
Flexible Data Formats (Solution)5 min
Identifying Unreliable Data + Nulls3 min
Unreliable Data - Part 1 (Solution)4 min
Unreliable Data -Part 2 (Solution)7 min
Unreliable Data - Part 3 (Solution)8 min
Answering Ambiguous Questions3 min
Users Table (Solution)16 min
3 lectures
A Note From UC Davis10 min
Connecting to Mode Analytics20 min
Not Dumb Questions10 min
2 exercices pour s'entraîner
Are You Connected to Mode Analytics?5 min
Module 1 Quiz30 min
Semaine
22 heures pour terminer
Creating Clean Datasets
In this module, you will be able to name the main the categories of data types. You will be able to explain how the unfiltered data can be manipulated into a table where you can conduct data analysis. You will be able to discuss why a data warehouse is separate from a production database, and you will be able to use the tools you learned to create your own trustworthy tables.
10 vidéos (Total 53 min), 4 quiz
10 vidéos
Tools of the Trade: Coding Guide with Sublime Text (Optional)3 min
Data Types4 min
What is a Dependency?5 min
Create a View-Item Table2 min
Turn a Clean Query Into a Table (Activity/Solution)9 min
Hierarchy of Data2 min
Create User Info Table3 min
Create a User Snapshot Table (Activity/Solution)13 min
Partitions in Hive (Optional)5 min
4 exercices pour s'entraîner
Data Types (Quiz)10 min
Dependencies (Quiz)8 min
Turn a Clean Query Into a Table (Quiz)2 min
Module 2 Quiz30 min
Semaine
33 heures pour terminer
SQL Problem Solving
In this module, you will be able to map out your joins and be able to highlight the level of detail needed for different kinds of questions. You will be able to practice answering data questions, which should help you feel ready to get asked a whole slough of questions, vague questions, ambiguous questions, or even poorly worded questions. Finally, you will develop a strategy for answering all those questions using data.
11 vidéos (Total 64 min), 2 quiz
11 vidéos
Map Out Your Joins4 min
Test Queries vs Final Queries3 min
Example: Create an Aggregate Table with a Rolling Date Period2 min
Rolling Orders (Solution)10 min
Find Each User's Most Recently Viewed Page for an Email Campaign2 min
Review Windowing Functions3 min
Find the Difference Between Functions (Solution)11 min
Product Analytics4 min
Product Analytics (Solution)15 min
Coding with Style2 min
2 exercices pour s'entraîner
Reorder and Connect Tables10 min
Module 3 Quiz30 min
Semaine
45 heures pour terminer
Case Study: AB Testing
In this module, you will be able to use your SQL skills to set up a basic AB testing system. You will be able to apply hypothesis testing to prove or disprove a hypothesis about how user behavior changed. You will be able to test and interpret the results using a metric or metrics that are tied directly to some business metrics. You will be able to test your SQL skills and give you the base experience you need to learn anything more complicated in terms of AB testing in the future.
10 vidéos (Total 72 min), 2 lectures, 2 quiz
10 vidéos
Statistics Refresher (Optional)8 min
Test Assignments8 min
Test Assignments (Solution)11 min
Create a New Metric5 min
Creating a New Metric (Solution)9 min
Analyze Results7 min
Analyzing Results (Solution)13 min
Peer Review Overview3 min
Course Summary1 min
2 lectures
Additional Thoughts for the Final Project5 min
Additional Practice and Reading (Optional)10 min
1 exercice pour s'entraîner
Prepared for the Final Project?10 min
Enseignant
Katrina Glaeser
Data Scientist at ScribdContinuing and Professional Education
À propos de Université de Californie à Davis
UC Davis, one of the nation’s top-ranked research universities, is a global leader in agriculture, veterinary medicine, sustainability, environmental and biological sciences, and technology. With four colleges and six professional schools, UC Davis and its students and alumni are known for their academic excellence, meaningful public service and profound international impact.
Foire Aux Questions
Quand aurai-je accès aux vidéos de cours et aux devoirs ?
Une fois que vous êtes inscrit(e) pour un Certificat, vous pouvez accéder à toutes les vidéos de cours, et à tous les quiz et exercices de programmation (le cas échéant). Vous pouvez soumettre des devoirs à examiner par vos pairs et en examiner vous-même uniquement après le début de votre session. Si vous préférez explorer le cours sans l'acheter, vous ne serez peut-être pas en mesure d'accéder à certains devoirs.
À quoi ai-je droit si j'achète le Certificat ?
Lorsque vous achetez un Certificat, vous bénéficiez d'un accès à tout le contenu du cours, y compris les devoirs notés. Lorsque vous avez terminé et réussi le cours, votre Certificat électronique est ajouté à votre page Accomplissements. À partir de cette page, vous pouvez imprimer votre Certificat ou l'ajouter à votre profil LinkedIn. Si vous souhaitez seulement lire et visualiser le contenu du cours, vous pouvez accéder gratuitement au cours en tant qu'auditeur libre.
Quelle est la politique de remboursement ?
Une aide financière est-elle possible ?
D'autres questions ? Visitez le Centre d'Aide pour les Etudiants.
Coursera propose un accès universel à la meilleure formation au monde,
en partenariat avec des universités et des organisations du plus haut niveau, pour proposer des cours en ligne.
© 2019 Coursera Inc. Tous droits réservés.
