What is correlation and when would a researcher be interested in determining the correlation among two or more

Answer the following 2 questions1.What is correlation and when would a researcher be interested in determining the correlation among two or more variables?2. If the correlation between age and physical flexibility is -.68, what does this mean? How would this correlation look on a scatter diagram? What general shape would it have?

"Get 15% discount on your first 3 orders with us"
Use the following coupon
"FIRST15"

Order Now