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

What are the decision variables, Question 1 Water resources in many pa...

Question 1 Water resources in many parts of Australia are being closely watched and restrictions have been imposed on activities such as garden watering. Suppose that SA Water

Quantitative methods, which method is better for new product to gather the ...

which method is better for new product to gather the information they need,primary data or secondary data?

Define appraisal, Define appraisal (1) The act of evaluating. (2) The appr...

Define appraisal (1) The act of evaluating. (2) The approximated value as a result of such measures. Talk about APPRAISE

Quantitative Technic management, How has quantitative analysis changed the ...

How has quantitative analysis changed the current scenario in the management world today?

Probability, a survey of grocery revealed 40 percent had a pharmacy, 50 per...

a survey of grocery revealed 40 percent had a pharmacy, 50 percent had a floral shop, and70 percent had a deli. suppose 10 percent of the stores have all three departments, 30 perc

Is the coin biased, A coin that is balanced should come up heads half the t...

A coin that is balanced should come up heads half the time in the long run. A coin is tossed 4040 times and gives 2085 heads. Is the coin biased? Use Alpha = .05. (State the Hypoth

Balance of payments and mobility of labor & capital, Balance of Payments, M...

Balance of Payments, Mobility of Labor and Capital, Trade and Wages Balance of Payments 1. Will a country running a trade deficit import or export capital?  Explain. 2.

How long it takes a ball to fall to the bottom of a cone, A game that frien...

A game that friends and I try to play to guess how long it takes a ball to fall to the bottom of a cone and how many revolutions around the cone it will take. I do not have a lot

Activity Based Costing, Activity Based Costing, Accounting Traditional cost...

Activity Based Costing, Accounting Traditional cost accounting has been based on allocating a subjective or calculated range of indirect expenses to direct costs. Activity Based Co

Determine the coefficient of determination, A researcher is interested in t...

A researcher is interested in the relationship between fathers' performance in high school and their children's social skills.  She obtains the high school transcripts of fathers a

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