in

(SOLVED!) What Is The Range Of Correlation?

When an investigator has collected two series of observations and wishes to see whether there is a relationship between them, he or she should first construct a scatter diagram 😉 The vertical scale represents one set of measurements and the horizontal scale the other 🙈 If one set of observations consists of experimental results and the other consists of a time scale or observed classification of some kind, it is usual to put the experimental results on the vertical axis 😊 These represent what is called the “dependent variable”. The “independent variable”, such as time or height or some other observed classification, is measured along the horizontal axis, or baseline. [1]
The correlation coefficient measures the degree of similarity between variables and can help predict how the values of both will be. Between -1 and +1, the correlation coefficient r is between 1 and 1. The correlation coefficient r is a positive value that indicates the increase in one variable and the decrease in the other. A r of 1 indicates the ability to predict the values of both variables. Negative r values indicate that one variable is more important than the other. An r value of 1 indicates that it’s impossible to predict the other. The correlation coefficient of 0. Indicates that the variables do not have a relationship (random scattering of the points). Bobbiejo Purvis (Xingning in China), last edited this page 19 days ago [2]
Image #2
Is it possible for a correlation to be statistically significant but weak? There are many factors that influence outcomes. BMI, for example, is determined by many factors (or exposures), such as age and height. The only determinant of height is the age. Contributing factorBMI is not only an important determinant but also a significant one. Therefore, while height may be significant in determining BMI, it could also be an important determinant. Even a weak correlation could have statistical significance if it is true. Sample size suffice. The conclusion is that a statistically significant weak correlation indicates that a particular exposure had an effect on the outcome variable. However, there are many other important determinants. Devonda Landers is our thanks for this tip. [3]
Image #3
Karl Pearson created the correlation coefficient in 1896. This statistic has been around for over 100 years and continues to be popular. This statistic is second only to the mean, and one of the most commonly used. The correlation coefficient’s weaknesses and warnings of misuse are well documented. A fifteen year-old consultant statistician who also teaches statisticsians professional and continuing studies in the Database Marketing/Data Mining Industry shows me how often warnings and weaknesses are ignored. There are many weaknesses and uses, but one is not often mentioned. The range of correlation coefficient intervals can be affected by individual distributions between the variables being correlated. 1) To discuss the effect of each variable’s distribution on the interval of correlation coefficient; 2) to give a process for calculating the adjusted correlation coefficient. The realized correlation coefficient interval can often be shorter than the initial one. [4]

Refer to the Article

  1. https://www.bmj.com/about-bmj/resources-readers/publications/statistics-square-one/11-correlation-and-regression
  2. https://www.usna.edu/Users/oceano/pguth/md_help/html/satb4qgk.htm
  3. https://sphweb.bumc.bu.edu/otlt/MPH-Modules/PH717-QuantCore/PH717-Module9-Correlation-Regression/PH717-Module9-Correlation-Regression4.html
  4. https://www.kdnuggets.com/news/2008/n11/16i.html
Mae Chow

Written by Mae Chow

Passionate about writing and studying Chinese, I blog about anything from fashion to food. And of course, study chinese! I'm a passionate blogger and life enthusiast who loves to share my thoughts, views and opinions with the world. I share things that are close to my heart as well as topics from all over the world.

What Does Page Of Pentacles Mean For Love? [SOLVED!]

When Did Jj Thomson Do His Experiment? (Solved)