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...

May 06, 2020

The statistical concepts and methods are very well explained in an easy to understand manner. Good examples are given to demonstrate application of the cocepts and methods in business environment.

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.

筛选依据：

创建者 jorge l

•Jun 12, 2018

good class, clear and concise. thanks to well organized presentations done by the teacher

创建者 Andrii K

•Apr 29, 2018

Very good course with a lot of applied examples and step by step detailed explanation.

创建者 Victorino M

•Feb 07, 2020

Excellent course, it helped me a lot to understand hypothesis testing using excel. !

创建者 PRERIT M

•Jun 22, 2020

Highly qualitative course with real statistical skills. Kudos to the instructor.

创建者 Dr. U S

•Apr 04, 2020

I have better understanding of excel and research interface and research too.

创建者 Gopeshwar D

•Jun 17, 2020

Awesome course,with awesome exercises.Learnt a lot about hypothesis testing!

创建者 Mark H

•Apr 23, 2018

Good summary of how to test hypothesis. I look forward to putting this work.

创建者 shwetamehna

•Jun 22, 2019

If you want to learn the basics of hypothesis, then this course is for you.

创建者 Owoeye A

•Jun 27, 2020

This course is so practical and well presented by the instructor, good job

创建者 Mohammed T C

•May 16, 2020

Excellent Course with 100% practical based learning. Learned a lot. Thanks

创建者 Emil R

•Dec 27, 2018

Great course. Excellent Instructor. Absolutely worth the time and effort.

创建者 Arushi S

•Jun 23, 2017

concept was very nicely explained. The excel examples were very helpful

创建者 sutan a m

•Mar 23, 2019

easy to follow! the rule of thumbs helps a lot, and a lot of examples.

创建者 EILEEN K X Y

•Jun 18, 2020

Useful and insightful. Unlocked new data analytics tools with Excel.

创建者 Yeasin A A

•Jun 18, 2020

It was fabulous. Concise and clear. better than many similar lessons

创建者 Victoria

•Oct 04, 2018

Concise practical approach to business hypothesis testing in excel.

创建者 Jean-Philippe M

•Aug 06, 2019

Excellent teaching and great course. Enjoyed every bit of it!

创建者 Gregory L

•Nov 22, 2018

Loved the course; great materials, great pace, great practice

创建者 Tim L

•May 27, 2018

This is the class where it really started to get interesting.

创建者 Damilola D

•May 23, 2018

This was a helpful course. I can't wait to apply it at workl

创建者 Manish A

•Apr 17, 2018

A very insightful and detailed course on Hypothesis Testing

创建者 Naimur R C

•May 13, 2020

very thorough and insightful course. highly recommended.

创建者 Yizhi H

•Apr 02, 2020

I truly enjoyed this class! The instructor is the best!

创建者 Bhola P

•May 29, 2018

just go for it. This is just amazing. Loved it totally.

创建者 Faris D A

•Jan 31, 2020

It was a really helpful course, many thanks to you!!!!