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

Determine the upper and lower control limits, You should show your work to ...

You should show your work to earn partial credit.  You must show ALL of your work on the pages provided.  There should be plenty of room to show your work on the page with each pro

What is the point estimate of the proportion, According to Thomson Financia...

According to Thomson Financial, through January 25, 2006, the majority of companies reporting profits had beaten estimates (BusinessWeek, February 6, 2006). A sample of 162 compani

Report on the residual plots, Report on the residual plots – are the assump...

Report on the residual plots – are the assumptions of the regression met

What is the speed of the block, A prevent of huge m = 10 kg is drawn by a p...

A prevent of huge m = 10 kg is drawn by a power F = 100 N at a position q = 30o with the horizontally along a sleek horizontally exterior. What is the speed of the block? (g = 10 m

Determine the local luminance, 1. Consider a room 3 m x 3m x 3m with one fa...

1. Consider a room 3 m x 3m x 3m with one façade made of glazing with diffuse transmittance 0.6 and reflectance 0.2. The interior surfaces have a reflectance of 0.5. Consider incid

Corlation, 1. Calculate Karl Pearson’s coefficient of correlation between e...

1. Calculate Karl Pearson’s coefficient of correlation between expenditure on advertising (X) and sales (Y) from the data given below: The management decided to stop further expens

Standard deviation, Standard Deviation: The standard deviation is a gauge o...

Standard Deviation: The standard deviation is a gauge of the variance, or dispersion, of the market return over its average returns. Thus Standard Deviation gives an insight of tot

Find out the value to the firm and wacc , 1. HV Inc. is trying to determine...

1. HV Inc. is trying to determine the optimal time to undertake a product expansion. The project will require an initial investment of $15M and the firm has a WACC of 3%. The expan

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