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

Co-efficient of covariance., solution of problems based on coefficient of c...

solution of problems based on coefficient of covariance

Test statistic and the p-value, An experimental surgical procedure is being...

An experimental surgical procedure is being studied as an alternative to the old method. Both methods are considered safe, but the new method has the potential to reduce operating

Normal distribution, In a sample of 120 workers in a factory, the mean and ...

In a sample of 120 workers in a factory, the mean and standard deviation of wages were Rs. 11.35 and Rs.3.03 respectively. Find the percentage of workers getting wages between Rs.9

Pearsons chi square, difference between tests of goodness of fit & tests of...

difference between tests of goodness of fit & tests of independence

Probability, s. All human blood can be "ABO-typed" as one of O, A, B, or AB...

s. All human blood can be "ABO-typed" as one of O, A, B, or AB, but the distribution of the types varies a bit among groups of people. Here is the distribution of blood types for a

Financial accounting, when the closing inventory is understated, the profit...

when the closing inventory is understated, the profit for the period will

Compute the proportion, In 2009, the average number of runs scored in the N...

In 2009, the average number of runs scored in the National League was approximately 4.5 per team. Therefore, a team has done an adequate job with its offense if it scores at least

Post-retirement health insurance, Post-retirement health insurance Some...

Post-retirement health insurance Some companies continue to provide insurance policy to workers after they have on. This one person benefit is considered to be part of the sett

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