The Online Correlation Calculator  
  Created by David Alderoty © 2011, David@TechForText.com  
  To contact the author use the above email address or  
  left click on these words for a website communication form.  
           
  This software functions online, directly from this website, and it calculates the Correlation Coefficient of two data sets. Each data set may have up to 100 numbers.  
  In the following instructions, the data sets are referred to as the Pink and Blue data sets, which correspond to the colors of the input boxes. Thus to use this software, defined one of your data sets as Pink and the other as Blue. Then, scroll down and you will see a set of pink input boxes on the left, and a set of blue input boxes on the right. Then enter the Pink data set in the pink input boxes, and the Blue data set in the blue input boxes.  
  Before entering or deleting numbers in an input box, you must first left click on it.  
  When you enter numbers, you must start at the top input box, and work your way downward. For each, number you place in a pink input box, you must place a number in the adjacent blue input box. The data sets you enter must occupy an equal number of input boxes. By design, this software will not perform calculations when it encounters error conditions, such as the above.  
   
           
  This software has a controllable rounding mechanism that rounds all the  
  calculated results down to decimal places. You can change this  
   
  decimal places you prefer in the above input box.  
                                     
  The Correlation Coefficient for the Pink and Blue Data Set is:  
   
  The following is an unconventional way of presenting correlation  
  The correlation between the Pink and Blue data sets in PERCENT is:  
   
  Column for the Pink data set Column for the Blue data set  
   
   
  In the narrow pink column on the right enter the numbers for the Pink Data set. OPTIONAL: In the wide pink column on the left, you can enter a descriptive word or phrase, or other information, for each number you enter, such as the name of a test subject, or the individual that collected the data.

In the narrow blue column on the right enter the numbers for the Blue Data set. OPTIONAL: In the wide blue column on the left, you can enter a descriptive word or phrase, or other information, for each number you enter, such as the name of a test subject, or the individual that collected the data.