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

Find the probability density function, The lifetime T (in days) of an elect...

The lifetime T (in days) of an electrical component has reliability function given by: R(t) = e - 0 : 01 t for time t > 0. An electrical system consists of four such component

Define the critical value and degrees of freedom, (3) You  generate  a  nul...

(3) You  generate  a  null  hypothesis  that  = 32.   You  draw  a  random  sample  of  size n = 28 from the population. You observe the following sample statistics: Y = 35:5 and a

Proton-electron hypothesis, Proton-electron hypothesis: this was put forwar...

Proton-electron hypothesis: this was put forward in the year 1930 to account for the emission of alpha and beta particles from the nuclei of radioactive elements. The positive char

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

Automatic interaction detector (aid), Automatic interaction detector (AID) ...

Automatic interaction detector (AID) A method or the technique which uses a set of categorical explanatory variables to divide data into the groups which are relatively homoge

Histogram and historigram, show the differences between histogram and histo...

show the differences between histogram and historigram

How can do entry, mr.sunil join as a new business partner and borrowed rs. ...

mr.sunil join as a new business partner and borrowed rs. 850000 from ansul investment co. and depoisted the money into a uti bank account on 1-4-2006.

Tally, what is meant by tally

what is meant by tally

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