Correlation and regression, Basic Statistics

Assignment Help:

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

Acceptance region, Acceptance Region A term related with the statistical...

Acceptance Region A term related with the statistical signi?cance tests, which provides the set of values of a test statistic for which the null hypothesis cannot rejected. Supp

Simulation for structural equation modeling, I want to simulate observed va...

I want to simulate observed variables for structural equation modeling. In real data it is assumed that observed variables are not error free variables, so should i also simulate e

Standard error of the differnce between means., IN two separate studies, th...

IN two separate studies, the actual difference between the means of a treated group and untreated group is 3 points. However, in one study sm1-m2 is very large and so the 3 points

binomial problem-replication strategy, It is 11:30pm on Thursday evening, ...

It is 11:30pm on Thursday evening, New York City time. You are still recovering from your long haul flight from Sydney which arrived at JFK only hours ago. Thank your favourite dei

Exploratory analysis of the data, The Home Improvement Company (HIC) operat...

The Home Improvement Company (HIC) operates five stores in a large regional area. The company wished to study the relationship between x, house value ($'000) and Y, yearly expendit

Find the mean and standard deviation, A travel agency surveyed 38 customers...

A travel agency surveyed 38 customers holidaying in Australia who took their spouses on either a skiing or a golfing vacation. The data comprises amounts (in hundreds of dollars).

Hypotheses- sampling methodology or data collection design, Research Assign...

Research Assignment for Quantitative Methods 2 Purpose: To design, undertake and analyse research on a negotiated project, possible themes could be any one of the following:

Assignment problem, how to solve the assignment problem?

how to solve the assignment problem?

Linear regression, Linear regression is a regression methods that models...

Linear regression is a regression methods that models the relationship between a dependent variable independent variables ? X1 i = 1 .........p and a random term . the mod

Accounting cases, Hi I just want to know if you many be able to solve thes...

Hi I just want to know if you many be able to solve these three cases for intermediate accounting class! Thank you

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages