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

Find out value of the probability, Q1 Choose the option that is closest to...

Q1 Choose the option that is closest to the exact value of the probability P (30 ≤ X  Q2 Choose the option that is closest to the approximate value of the probability P

Find the probability that a cup of drink chosen at random, Question: (i...

Question: (i) A soft drink machine is regulated so that it fills an average of 300 cL per cup. If the amount of drink in each cup is normally distributed with standard deviati

Homework help, example of descriptive statistics in word form

example of descriptive statistics in word form

Find the value, Find the value of E (i+). Show your calculation. i=7 i=3

Find the value of E (i+). Show your calculation. i=7 i=3

Histograms, The skewness is a measure of asymmetry and it is positive at 0....

The skewness is a measure of asymmetry and it is positive at 0.15 meaning that it is greater than zero which reveals that the tail extends to the right slightly indicating the dist

Calculate the transition probabilities, Consider a person who repeatedly pl...

Consider a person who repeatedly plays a game of chance (gambling)with two results possible (win or lose) with a probability p = 0, 3 to win. If the person has bet x amount and if

Cash basis, Cash basis A basis for accounting whereby revenues are recorde...

Cash basis A basis for accounting whereby revenues are recorded only when received & expenses are recorded only that salaried with no regard to the era in which they be earned, in

Calculate index number, TIME SERIES ANALYSIS: 1) Discuss the various m...

TIME SERIES ANALYSIS: 1) Discuss the various models of Time series. 2) What are the various methods of trend analysis? What are their implications in the business world?

Calculate its stationary probabilities, A small specialized workshop is use...

A small specialized workshop is used to perform periodic check-up on some high-tech devices. The check up is made in three stages whose durations are independent random variables w

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