4.8
1,221 個評分
208 條評論

## 課程概述

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...

## 熱門審閱

AU

2020年5月5日

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.

M

2020年8月20日

This course was very useful for me. We have learnt many interesting things of statistics like t statistic, t distribution, z statistics, confidence interval, sample proportion, hypothesis etc.

## 76 - Business Applications of Hypothesis Testing and Confidence Interval Estimation 的 100 個評論（共 209 個）

2020年4月7日

It was a challenging course. The lessons explained were thorough. It was a great experience

2017年10月21日

Excellent and educational course for everyone interested in statistical hypothesis testing.

2019年9月5日

Absolutely excellent learning format with a professor that clearly presents the material.

2018年6月12日

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

2021年4月6日

Excellent lectures. Quizzes helped to reinforce training. Wide applicability to business

2018年4月29日

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

2020年2月6日

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

2021年10月21日

Vivid and clear explanations by Sir. Thank you for designing such a great course.

2020年6月22日

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

2020年4月4日

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

2020年6月17日

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

2018年4月23日

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

2019年6月22日

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

2020年9月13日

It is nice to recall the studed data analysis and linking it more clearly.

2020年6月27日

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

2020年5月16日

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

2018年12月26日

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

2017年6月23日

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

2019年3月23日

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

2020年8月9日

My favorite course of the specialization so far, thank you Professor!

2021年3月18日

This was incredibly relevant and useful for business decision-making

2020年6月18日

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

2020年6月18日

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

2018年10月4日

Concise practical approach to business hypothesis testing in excel.

2021年8月31日

Great course! Very clear and backed with many real-world examples.