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

homework problem which requires data collection using an in, each student ...

each student will be assigned a homework problem which requires data collection using an information system. Two scores are given: 1- adequacy of data collection and relevancy ( M2

Valuing preferred stock, Gesto, Inc., has an issue of preferred stock outst...

Gesto, Inc., has an issue of preferred stock outstanding that pays a $4.50 dividend every year, in perpetuity. If this issue currently sells for $79.85 per share, what is the requi

Hom, (A) Find the binomial probability P(x = 5), where n = 15 and p = 0.50....

(A) Find the binomial probability P(x = 5), where n = 15 and p = 0.50. (B) Set up, without solving, the binomial probability P(x is at most 5) using probability notation. (C) H

Factor anaylsis statistical method , First of all, thank you very much for ...

First of all, thank you very much for your help. I have a mixes data base, categorial variable, liclekt scale on 5 and 4, and continous variable, and several dummy. I would need h

Sampling errors, what are the types of sampling errors and their causes?

what are the types of sampling errors and their causes?

Amp-amplification law, Amp-amplification law The job of an amplifier is o...

Amp-amplification law The job of an amplifier is obviously to amplify, but the law it abides by isn’t so simple. Ultimately, the amplifier is comparable to a valve, in the sense

Quartiles and percentiles, Quartiles and Percentiles Percentile can ...

Quartiles and Percentiles Percentile can be explained as : a measure this tells us what is the percent of the total frequency scored at or below the measure. Quartiles

Obtain the critical value for a hypothesis test, Obtain the critical value ...

Obtain the critical value (or values) for a hypothesis test for the mean if you conduct: (a) an upper tail "z" test at the 1% level of significance. (b) a two-tailed "z" test

Power supply, A source of electrical power. A device or system which delive...

A source of electrical power. A device or system which delivers electrical and or other types of energy to a corresponding device or system. Are commonly referred to as PSU (Power

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