Writing a C program:

File to be tested:

1

-12

-23

-31.5

-1.1

-2

22

-1.8

10

-8

20

-18

100

-89

31

-25

-55

10

-25

5

25

-5

The correlation coefficient is one statistical measure used to determine whether there is a linear relationship between two quantities x and y. It is equal to 1 if there is a perfect positive linear relationship between x and y, that is, if y increases linearly as x increases. If there is a perfect negative linear relationship between x and y, that is, if y decreases linearly as x increases, then the correlation coefficient has the value - 1. A value of 0 for the correlation coefficient indicates that there is no linear relationship between x and y, and nonzero values between -1 and 1 indicate a partial linear relationship between the two quantities. The correlation coefficient for a set of n pairs of x and y-values is calculated by where is the sum of the x-values y is the sum of the y-values x2 is the sum of the squares of the x-values y is the sum of the squares of the y-values xy is the sum of the products xy of corresponding x- and y-values Write a program to calculate the correlation coefficient of a set of data points. Read the data points from a file named "corr.txt" located in the default folder The file will have one x-y pair per line Read all of the data pairs until the end of file is encountered. You don't need to upload a data file - we'll use our own. A sample data file is included if you want to check your program with it