4.8
1,269 個評分
206 條評論

## 課程概述

Regression Analysis is perhaps the single most important Business Statistics tool used in the industry. Regression is the engine behind a multitude of data analytics applications used for many forms of forecasting and prediction. This is the fourth course in the specialization, "Business Statistics and Analysis". The course introduces you to the very important tool known as Linear Regression. You will learn to apply various procedures such as dummy variable regressions, transforming variables, and interaction effects. All these are introduced and explained using easy to understand examples in Microsoft Excel. The focus of the course is on understanding and application, rather than detailed mathematical derivations. Note: This course uses the ‘Data Analysis’ tool box which is standard with the Windows version of Microsoft Excel. It is also standard with the 2016 or later Mac version of Excel. However, it is not standard with earlier versions of Excel for Mac. WEEK 1 Module 1: Regression Analysis: An Introduction In this module you will get introduced to the Linear Regression Model. We will build a regression model and estimate it using Excel. We will use the estimated model to infer relationships between various variables and use the model to make predictions. The module also introduces the notion of errors, residuals and R-square in a regression model. Topics covered include: • Introducing the Linear Regression • Building a Regression Model and estimating it using Excel • Making inferences using the estimated model • Using the Regression model to make predictions • Errors, Residuals and R-square WEEK 2 Module 2: Regression Analysis: Hypothesis Testing and Goodness of Fit This module presents different hypothesis tests you could do using the Regression output. These tests are an important part of inference and the module introduces them using Excel based examples. The p-values are introduced along with goodness of fit measures R-square and the adjusted R-square. Towards the end of module we introduce the ‘Dummy variable regression’ which is used to incorporate categorical variables in a regression. Topics covered include: • Hypothesis testing in a Linear Regression • ‘Goodness of Fit’ measures (R-square, adjusted R-square) • Dummy variable Regression (using Categorical variables in a Regression) WEEK 3 Module 3: Regression Analysis: Dummy Variables, Multicollinearity This module continues with the application of Dummy variable Regression. You get to understand the interpretation of Regression output in the presence of categorical variables. Examples are worked out to re-inforce various concepts introduced. The module also explains what is Multicollinearity and how to deal with it. Topics covered include: • Dummy variable Regression (using Categorical variables in a Regression) • Interpretation of coefficients and p-values in the presence of Dummy variables • Multicollinearity in Regression Models WEEK 4 Module 4: Regression Analysis: Various Extensions The module extends your understanding of the Linear Regression, introducing techniques such as mean-centering of variables and building confidence bounds for predictions using the Regression model. A powerful regression extension known as ‘Interaction variables’ is introduced and explained using examples. We also study the transformation of variables in a regression and in that context introduce the log-log and the semi-log regression models. Topics covered include: • Mean centering of variables in a Regression model • Building confidence bounds for predictions using a Regression model • Interaction effects in a Regression • Transformation of variables • The log-log and semi-log regression models...

## 熱門審閱

BB

2020年4月21日

Wonderful Course having in depth knowledge about all the topics of regression analysis. Instructor is very much clear about the topic and having good teaching skill. Method of teaching also very good.

WB

2017年12月20日

I have found Course 3 and 4 of this specialization to be challenging, but rewarding. It has helped me build confidence that I can do just about anything with data provided to increase positive impact.

## 176 - Linear Regression for Business Statistics 的 200 個評論（共 202 個）

2018年6月6日

Phenomenal course. A little more in-depth explanations and more examples for the concepts introduced in the last two weeks would have been nice though. In week 3 and 4, I found it challenging to go so quickly over so many new concepts all of a sudden. But still, I would really recommend taking this course, I found it useful.

2017年4月13日

An in depth explanation of how to use Excel for Linear Regression and what the Output values in Excel's Regression mean. Note that the transcripts/subtitles contain many errors, which can be problematical for the hard of hearing or non English speakers, which is why I gave the course only 4 points.

2017年12月27日

I thought it was very well done but I felt like the material was kind of rushed and some subjects were brushed over. I would like a little more in depth coverage of this subject.

2019年10月16日

content, insightfulness, logics are very comprehensive and carefully designed, however, certain exam questions are questionally and arguably disgned.

2018年7月2日

Overall a good course that cultivates skills in precise use of regression, data handling and understanding of applied business modelling problems.

2019年4月15日

I'd like to have more examples regarding Log-Log and the Semi-Log Regression Models and also Interaction Variables interpretations. Thanks a lot!

2017年12月18日

That would be better if the correct answer if being shown after passing the exam, because I can't able to learn from my mistakes

Great course !!!

2017年4月8日

The exercises included help a lot in practically understanding the matter. I did not find that in other courses and it was a miss.

2020年7月25日

Really great overall; would have liked to see more coverage of natural logs. Excellent application!

2020年10月23日

the content was good but above all the way it was taught was amazing.

2020年2月2日

Perfect for beginners, so I agree it can be not like a challenge.

2018年1月17日

The explanations of a lot of interpretations are repetitive.

2017年6月7日

The course was very informative and I have learnt a lot.

2019年11月22日

Good course to know about basics of Linear regression

2020年6月5日

The course is very good but needs more practice sums

2018年8月8日

Rigorous and rewarding when you put the work in.

2020年5月16日

Theory need to be increase a little

2019年6月2日

Very good course for regression

2019年8月11日

Great course, great teacher!

2020年5月6日

Well and clear explanation.

2018年4月1日

Really liked the course!!!

2019年12月1日

Material is kind of dry

2019年10月10日

nicely explained

2020年4月13日

Great!

2019年2月17日

Needs more worked examples... good luck trying to get any useful feedback from the instructors/discussion board. Your definitely on your own...