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

Sequential sampling, Sequential Sampling: This is somewhat complex sample d...

Sequential Sampling: This is somewhat complex sample design where the ultimate size of the sample is not fixed in advance but is determined according to mathematical decisions on t

Need homework answers by midnight tonight, first question: Glaser Services ...

first question: Glaser Services acquired 30% of the outstanding common stock of Nickels Company on January 1, 2008, by paying $864,180 for the 48,010 shares. Nickels declared and p

Quartile Deviation, Quartile Deviation The range as a measure of dispersio...

Quartile Deviation The range as a measure of dispersion discussed above has certain limitations. It is based on two extreme items and it fails to take account of the scatter withi

Aritmetic mean, merits and demerits of arithmetic mean

merits and demerits of arithmetic mean

#titletime series, importance of time series in statistics

importance of time series in statistics

Why is interest expense a no operating expense, Why is interest expense a n...

Why is interest expense a no operating expense? Attention cost is a no operating cost when it is not part of a business's primary functions. For example, a store's primary func

Three major accounts and their rules, Three major Accounts and their Rules ...

Three major Accounts and their Rules There are three major Records which are a) Personal Accounts b) Real Accounts c) Moderate Accounts Rule for Personal Account: Ch

Hypothesis testing, a clinical psychologist claims that on average, at leas...

a clinical psychologist claims that on average, at least twenty five clients visit her per week. for a random sample of 8 weeks, the following numbers of clients were recorded; 25

Descriptive statistics, The descriptive statistics outputs for both the var...

The descriptive statistics outputs for both the variables are as below: Wii Group Mean 95.8 Standard

Regression Analysis, I have a regression analysis assignment using minicab,...

I have a regression analysis assignment using minicab, but I am not sue how to do with my current data set?

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