A regional gymnastics competition held in Cardiff used two judges (Judge U and Judge V), each working independently, to score the artistic merit of the final floor routines of gymnasts on a scale out of . The gymnasts are labelled to . The scores are shown in the table below.
(a) Find the Pearson's product-moment correlation coefficient, , for this data.
(b) Using the value of , the relationship between Judge U's scores and Judge V's scores.