Explain correlation coefficient, Basic Statistics

Assignment Help:

Q. Explain Correlation Coefficient?

Ans.

The strength of a linear correlation is determined by how precisely the y variable shifts as the x variable increases. The two pictures on the right show data with a higher correlation than those on the left.

1619_Explain Correlation Coefficient.png

Data is said to have a perfect correlation if all points lie exactly along a line.

259_Explain Correlation Coefficient1.gif

The correlation coefficient, r, is a measure of the strength of the correlation. It is a number between 1 and +1. +1 indicates a perfect positive correlation and 1 indicated a perfect negative correlation. If r is positive, then there is a positive correlation between the two variables. If r is negative, there is a negative correlation between the variables.


Related Discussions:- Explain correlation coefficient

Linear power supply, LINEAR POWER SUPPLY (JPG) The Goodwill GPC3030D pow...

LINEAR POWER SUPPLY (JPG) The Goodwill GPC3030D power supply is an example of a linear power supply. Discoveries that were made in researching this power supply are things such

Define payroll withholdings, Define Payroll Withholdings The U. S. earn...

Define Payroll Withholdings The U. S. earnings tax system-as well as most condition earnings tax systems-requires business employers to hold paycheck taxation from their staff'

SAMPLING mETHOD, A toothpaste company wants to know if its new product incr...

A toothpaste company wants to know if its new product increases the length of time in between dentist visits for its users. The company sets a target of 180 days to determine if it

Regression analysis, Regression line drawn as y=c+1075x, when x was 2, and ...

Regression line drawn as y=c+1075x, when x was 2, and y was 239, given that y intercept was 11. Caculate the residual

What is sample population, Q. What is Sample Population? Choosing a sam...

Q. What is Sample Population? Choosing a sample population is one of the most important factors in gathering statistical data because all of the claims will be based on the sam

Data analysis, S&V Industries manufactures book cases. Different sizes of c...

S&V Industries manufactures book cases. Different sizes of cases are kept in inventory. The company has 80 man-hours and 36 pounds of wood available each day. 2 pounds of wood are

Correlation and regression, What is regression analysis ? Discuss the relat...

What is regression analysis ? Discuss the relation between ''correlation coefficient'' and the ''regression coefficients''?

What does a bookkeeper do?, What does a bookkeeper do? An accountant is ...

What does a bookkeeper do? An accountant is responsible for handling the documents for a business's dealings. Ultimately the dealings will be registered in records within the bu

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd