5) Annual precipitation depths measured at 2 nearby flow observation stations are given below. (Add the last two digits of your student ID# to the values below, and use the new values) a) Calculate the correlation coefficient between the precipitation values at two stations. b) Draw the regression line. Show the data points of the two stations and the regression formula on the graph. Years 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 P (cm) 139 177 211 122 135 157 141 179 104 187 139 225 127 114 79 129 P2 (cm) 162 219 208 123 167 212 218 189 178 233 181 182 172 64 108 173