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Learner Reviews & Feedback for Data Wrangling, Analysis and AB Testing with SQL by University of California, Davis

3.3
stars
961 ratings

About the Course

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....

Top reviews

MF

Sep 22, 2020

A good course for learning and apply sql to conduct analysis on ab testing results. Would be better if the instructor could provide more info about how to design and apply AB Testing on the customers

SP

Jul 29, 2019

The instructor is very smart and her syllabus is very easy to follow. The real life examples are great and helps put ideas in perspective! I would definitely recommend this course and already have!

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376 - 390 of 390 Reviews for Data Wrangling, Analysis and AB Testing with SQL

By Jing S

Jul 18, 2020

The instructor is terribly bad- -. No clearly point, no useful exercise. Her logic is mess

By Сергей Ф

Mar 2, 2023

Poorly written and combined. Such a contrast with a first course in a specialisation.

By Daniel B

Jan 3, 2024

Dull, it is often unclear what is being asked in exercises. Poor explanations.

By 陈照

Jul 14, 2020

the lectures are so unclear. Colossal waste of time.

By jake t

Jun 29, 2021

final project is horrendously poorly organised

By ישי ש

Jul 31, 2022

The teacher made many mistakes during videos

By Yasser

Jan 2, 2023

poorly explained , Poor education quality

By Raul V V T

Apr 28, 2023

You need to improve the assignments

By Nicolas V

Oct 29, 2020

Explanations and exercises unclear

By Fosca F

May 12, 2020

it is really badly done

By Hwaejin C

Jan 29, 2024

this course sucks

By Deleted A

Feb 6, 2024

I cannot unroll

By Michael

Aug 24, 2021

Hard to use.

By Frank W

Sep 9, 2022

Really poor

By Ziyang F

Mar 19, 2020

suck