返回到 Business Applications of Hypothesis Testing and Confidence Interval Estimation

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Confidence intervals and Hypothesis tests are very important tools in the Business Statistics toolbox. A mastery over these topics will help enhance your business decision making and allow you to understand and measure the extent of ‘risk’ or ‘uncertainty’ in various business processes.
This is the third course in the specialization "Business Statistics and Analysis" and the course advances your knowledge about Business Statistics by introducing you to Confidence Intervals and Hypothesis Testing. We first conceptually understand these tools and their business application. We then introduce various calculations to constructing confidence intervals and to conduct different kinds of Hypothesis Tests. These are done by easy to understand applications.
To successfully complete course assignments, students must have access to a Windows version of Microsoft Excel 2010 or later. Please note that earlier versions of Microsoft Excel (2007 and earlier) will not be compatible to some Excel functions covered in this course.
WEEK 1
Module 1: Confidence Interval - Introduction
In this module you will get to conceptually understand what a confidence interval is and how is its constructed. We will introduce the various building blocks for the confidence interval such as the t-distribution, the t-statistic, the z-statistic and their various excel formulas. We will then use these building blocks to construct confidence intervals.
Topics covered include:
• Introducing the t-distribution, the T.DIST and T.INV excel functions
• Conceptual understanding of a Confidence Interval
• The z-statistic and the t-statistic
• Constructing a Confidence Interval using z-statistic and t-statistic
WEEK 2
Module 2: Confidence Interval - Applications
This module presents various business applications of the confidence interval including an application where we use the confidence interval to calculate an appropriate sample size. We also introduce with an application, the confidence interval for a population proportion. Towards the close of module we start introducing the concept of Hypothesis Testing.
Topics covered include:
• Applications of Confidence Interval
• Confidence Interval for a Population Proportion
• Sample Size Calculation
• Hypothesis Testing, An Introduction
WEEK 3
Module 3: Hypothesis Testing
This module introduces Hypothesis Testing. You get to understand the logic behind hypothesis tests. The four steps for conducting a hypothesis test are introduced and you get to apply them for hypothesis tests for a population mean as well as population proportion. You will understand the difference between single tail hypothesis tests and two tail hypothesis tests and also the Type I and Type II errors associated with hypothesis tests and ways to reduce such errors.
Topics covered include:
• The Logic of Hypothesis Testing
• The Four Steps for conducting a Hypothesis Test
• Single Tail and Two Tail Hypothesis Tests
• Guidelines, Formulas and an Application of Hypothesis Test
• Hypothesis Test for a Population Proportion
• Type I and Type II Errors in a Hypothesis
WEEK 4
Module 4: Hypothesis Test - Differences in Mean
In this module, you'll apply Hypothesis Tests to test the difference between two different data, such hypothesis tests are called difference in means tests. We will introduce the three kinds of difference in means test and apply them to various business applications. We will also introduce the Excel dialog box to conduct such hypothesis tests.
Topics covered include:
• Introducing the Difference-In-Means Hypothesis Test
• Applications of the Difference-In-Means Hypothesis Test
• The Equal & Unequal Variance Assumption and the Paired t-test for difference in means.
• Some more applications...

Oct 17, 2017

Professor explains well and makes it easy to not only understand, but to remember what you learned in previous lessons even if you are going back after a long period of time between lessons.

Jun 09, 2019

A rewarding experience because I have been able to learn very valuable information. It is an excellent course. It has helped me in the personal and professional field. Thank you.

筛选依据：

创建者 Afonso A R

•Dec 04, 2019

Very useful!

创建者 Marc-Aurelien N

•Aug 21, 2019

Just great !

创建者 jittu s

•Mar 27, 2019

great course

创建者 郭婉莹

•Aug 23, 2017

Nice course!

创建者 Linh P

•Mar 07, 2017

Great course

创建者 Gregory R G J

•Nov 28, 2018

Thumbs Up!

创建者 Olga

•Jan 31, 2019

Great

创建者 Atis R

•Feb 22, 2019

Good

创建者 Chandrasekaran R

•Oct 15, 2017

d

创建者 Aafiyah D

•Apr 03, 2020

This course was very different from the other data analysis courses. it really shows one how to compare data points in the same sample/population.

very interesting and many thanks to the prof, he made it easy to understand! the examples here as there were alot really helped!! thank you!

创建者 Saurabh M

•Sep 14, 2017

This was a really interesting course. Some of the video lectures were longer than usual however, the content and the way it was taught kept it interesting. I'd definitely recommend this course to friends.

创建者 Shiyu D

•Apr 08, 2018

It's great/ but sometimes I find it a little confusing when so many new concepts come to me. Better take notes while you are having this course^-^

创建者 Lluís M

•Dec 06, 2017

Great way to learn useful knowledge from home and in a easy and fast way. Very helpful when you usually work with data analysis.

创建者 Mayank R

•Sep 21, 2019

useful course. It can add some more details and differentiation between T.INV and T.INV.TWO functions used in excel.

创建者 Colin P

•May 16, 2018

Good intro to hypothesis testing using excel for business problems. Lectures are easy to follow - but take notes!

创建者 Pranjal S S

•Nov 04, 2017

Loved the course! The structure and explanation throughout is brilliant for a newbie.

创建者 César P O

•Sep 11, 2019

It needs to show the correct answers when you do wrong in the tests

创建者 Eduardo R O S

•Feb 01, 2020

Excellent course to refresh your knowledge about inference

创建者 Renier B

•Feb 19, 2020

too easy compared to part 1 &2

创建者 Harsha M

•Apr 26, 2019

Brilliant course!!

创建者 Prashant K

•Sep 29, 2018

more application

创建者 renu m

•May 12, 2019

Week 3 and 4 are simpler; but week 1 and 2 took a lot of external references to understand.