Summary
Summary Simple and Multiple Regression
- Course
- Institution
summarizes the topic of Simple and Multiple Regression in statistics.
[Show more]
Seller
Follow
muhsin212
Content preview
Simple Linear Regression, Regression Analysis
• In 1889, Sir Francis Galton, a cousin of Charles Darwin
published a paper on heredity, “Natural Inheritance”.
• It refers to the statistical technique of modeling the
relationship between two or more variables. In general
sense, regression analysis means the estimation or
prediction of the unknown value of one variable from the
known value(s) of the other variable(s).
• It is one of the most important and widely used statistical
techniques in almost all sciences - natural, social or physical.
, Simple Linear Regression
• Regression analysis is a mathematical measure of the average
relationship between two or more variables in terms of the
original units of the data.
• Study the nature of relationship between the variables.
Establish if there is a statistically significant relationship
between two variables
• The cause and effect relationship is clearly indicated through
regression analysis
• Forecast new observations-
ex- what will be the sales of mask over the next quarter?
, Simple Linear Regression
• In regression analysis we use the independent variable (X) to estimate the
dependent variable (Y).
• Dependent variable: This is the variable whose values we want to explain
or forecast . Its values depend on something else. We denote it as Y
• Independent variables: This is the variable that explains the other explain
variable . Its values are not dependent, called independent variable. We
denote it as X.
• Both variables must be at least interval scale.
• The relationship between the variables is linear.
You may remember the equation
y=mx+c
y= a+bx
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller muhsin212. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83822 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now