<h3><u><em>Write down the formula for finding the circumference of a circle using the diameter. The formula is simply this: C = πd. In this equation, "C" represents the circumference of the circle, and "d" represents its diameter. That is to say, you can find the circumference of a circle just by multiplying the diameter by pi.</em></u></h3>
Assuming the question is in the wrong format and"date" is data. I chose X= 10,11,16,9,7,15,16,10 and Y= <span>96,51,62,58,89,81,46,51 the correlation cooefficent is -0.3351