1.Here are Quiz 1 and Quiz 2 scores for 3 students.For both quizzes, the mean is 10 and the standard deviation is 5.I am showing you an example of how to calculate the Pearson Product Moment Correlation Coefficient r:

this is the example

StudentQuiz 1Quiz 2z-Quiz 1z-Quiz 2(z Quiz 1)(z Quiz 2)

11515111

21010000

355-1-11

r = (2)/(3-1) = 1.0

Sum of ZxZy =2

This one is my question

Here is one for you to do:

StudentQuiz 1Quiz 2z-Quiz 1z-Quiz 2(z Quiz 1)(z Quiz 2)

4155

51010

6515

r =

Sum of ZxZy =