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

Time seires, explain time series analysis

explain time series analysis

Is venus geologically active, Is Venus geologically active? -It is almost ...

Is Venus geologically active? -It is almost certain that Venus, a planet almost of the same size as earth is geologically active. Recent studies show that there is Volcanic and t

What is their payout ratio?, The Equity accounts of Blydskap Ltd are shown ...

The Equity accounts of Blydskap Ltd are shown below: Ordinary Share Capital (R2 par value)                  R200 000 Share Premium

Accreted value definition, An assessment time frame for certain purchases a...

An assessment time frame for certain purchases and debt equipment that reviews on the stability piece only that part of their face value that shows major and interest acquired curr

Sum, 3. In a management class of 100 students’ three languages are offered ...

3. In a management class of 100 students’ three languages are offered as an additional subject viz. Hindi, English and Kannada. There are 28 students taking Hindi, 26 taking Hindi

Confidence interval for a proportion, The quick method for a confidence int...

The quick method for a confidence interval for a proportion uses p ±1/√n as an approximation for a 95% confidence interval.  The margin of error in this case is slightly larger tha

Cost accounting, Problems and solutions in marginal costing

Problems and solutions in marginal costing

Describe sample space for experiment, The elevator in the Math and Computer...

The elevator in the Math and Computer Building can stop at one of six ?oors. Four riders get on the elevator at the ?rst ?oor and the elevator heads up. Each rider picks a ?oor at

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