Please help how to do longhand

Calculate the correlation coefficient r, letting Row 1 represent the x-values and Row 2 the y-values. Then calculate it again, letting Row 2 represent the x-values and Row 1 the y-values. What effect does switching the variables have on r? Row 1 16 27 31 Row 2 50 57 167 70 113 72 148 159 146 154 186 Calculate the correlation coefficient r, letting Row 1 represent the x-values and Row 2 the y-values. r= 0.424 (Round to three decimal places as needed.) Calculate the correlation coefficient r, letting Row 2 represent the x-values and Row 1 the y-values. r= (Round to three decimal places as needed.)