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

Arithmetic mean, How do I find the mean when the question is in a table for...

How do I find the mean when the question is in a table format?2 rows with 8 columns, Do I name them X and Y then do them?

Interpolation and extrapolation, What is meant by interpolation and extrapo...

What is meant by interpolation and extrapolation. State the assumptions used for interpolation and extrapolation

STATISTICS, EIGHT definition of statistics and their scholars

EIGHT definition of statistics and their scholars

Marginal and absorption costing, difference of them for covering the follo...

difference of them for covering the following: 1.purpose of reporting 2.FORMAT OF INCOME STATEMENT

Sigma notation, Given the following pairs of random variables and comput...

Given the following pairs of random variables and compute the following sums. (NB: show your working table). 3 -7 2 10 6 11 10 12 15 14 (b) (c) (d) ?¦?2y

Quantitative techniques and decision making, Let the national income model ...

Let the national income model be: Y= c+1+G C=20+0.6y I=0.2y G=20 Where y= income, C= consumption, I= investment and G=government expenditure find y, C and I from the model. By quan

Find an equivalent martingale and state prices, It is a sunny Tuesday after...

It is a sunny Tuesday afternoon in the perfectly manicured harbourside city of Sydney. Dressed in your favourite pin stripe Gucci (Black Label thank you very much) and those hand c

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

Atomistic fallacy, Atomistic fallacy The fallacy which arises because of...

Atomistic fallacy The fallacy which arises because of the association amongst the two variables at the individual level might differ from the association between the similar two

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