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

compare the quality of the different estimations, To illustrate the import...

To illustrate the importance of model selection. We will use only the first four observations to estimate the function f such that ini t. h = f(h. d) for two different models.

Continuous probability distributions, Continuous probability distributions:...

Continuous probability distributions: Procurement and working capital analysis – Normally distributed random variables and their transformation Procedures The data is measure

Show appropriate calculations and state the decision rule, Callaway's new d...

Callaway's new driver has been described as illegal because it promises driving distances that exceed USGA standards. Golf Digest conducted a test consisting of nine drives with

Explain Book value, Explain Book value The net quantity at which an advant...

Explain Book value The net quantity at which an advantage or asset group appears on the books of account, as distinguished from its marketplace or intrinsic value where book value

Measures of dispersion (variation), Measures of Dispersion (Variation) ...

Measures of Dispersion (Variation) A measure of dispersion is to measure the spread among values of observations in a data set. There are three commonly used measures of disper

What is Accrued expenditures or expenses, Costs or expenses that connect wi...

Costs or expenses that connect with the appropriate identification requirements of the finance type engaged but have not been compensated. Acquired expenses are required to be comp

Define mortality, Define Mortality: The following rates are used for measur...

Define Mortality: The following rates are used for measuring mortality. Crude death rate The annual crude death rate is defined as  Crude death rate = annual deaths / annual

Financial evaluation of projects, Financial evaluation of projects The net ...

Financial evaluation of projects The net provide value of a venture is the provide value of future repayments reduced by the provide value of expenditures. The amount of lower pric

Time series, what are the importances of time series

what are the importances of time series

Index numbers, discuss the considerations to be borne in mind when construc...

discuss the considerations to be borne in mind when constructing index numbers

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