Correlation and regression, Basic Statistics

The square of the sample correlation coefficient is typically denoted r2 and called the coefficient of determination. It estimates the fraction of the variance in Y that is explained by X in a simple linear regression. So if we have the observed dataset {y1,...yn} and the fitted dataset {f1,...fn}, and we denote the fitted dataset {f1,...fn} with {y1,...yn}, then as a starting point the total variation in the Yi around their average value can be decomposed as follows

Related Discussions:- Correlation and regression

Spss data analysis assignment, At the end of their first year of teaching, ...

At the end of their first year of teaching, 11 teachers were jointly ranked by two school administrators to reflect their relative degree of teaching competence. Unknown to the adm

Stock control, Two components, A and B, are used as follows: normal usage -...

Two components, A and B, are used as follows: normal usage - 50 per week each minimum usage - 25 per week each maximum usage - 75 per week re-order quantity - A:300; B:500 re-order

Mean and standard deviation, We have two applicants who are applying for a ...

We have two applicants who are applying for a job. They both took the high school exit exam, but different ones. Shannon took the ACT and scored 26, Frank took the SAT scored 1350.

Cost behaviour, variable cost per unit remain constent why

variable cost per unit remain constent why

Governmental Accounting, The fund statements for gorvernmental funds should...

The fund statements for gorvernmental funds should include a? A. Balance sheet for governmental funds. B. Statement of revenues,expenses, and changes in fund net assets. C.Statemen

Defining statistics, Problem 1 Statistics plays a vital role in almost ...

Problem 1 Statistics plays a vital role in almost every facet of human life. Statistics. Explain the applications of statistics in business and management. Defining Stati

Simple random sampling, This type of sampling is also known as chance sampl...

This type of sampling is also known as chance sampling or probability where each and every item in the population has an equal change of inclusion in the sample and one of the poss

Probability, a survey of grocery revealed 40 percent had a pharmacy, 50 per...

a survey of grocery revealed 40 percent had a pharmacy, 50 percent had a floral shop, and70 percent had a deli. suppose 10 percent of the stores have all three departments, 30 perc

Simple arithamatic mean, following the hight of studen 155,153,168,160,162...

following the hight of studen 155,153,168,160,162,166,167,180,257,165,

Employee portion of medicare tax, Employee portion of Medicare tax Medi...

Employee portion of Medicare tax Medical health insurance tax is also taken out from a worker's wage or income and is equaled by participation from the company. In other terms,

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages