Water salinity (%) and nitrate level (M/L) for 12 random water samples were taken from two different locations (A and B) and recorded. The data are presented below:

Salinity(6) 35.4 361 35.7 35.3 35.9 35.4 35.9 35.5 36.3 35.6 35.9 36.0 Nitrate(AM/L) 30.0 24.2 25.4 29.8 27.6 30.7 24.0 28.5 22.7 27.1 26.5 27.0 X = Salinity and Y = Nitrate X = 429, E Y = 323.5, M Y2 = 15,337.8, [Yz = 8792.3, XY = 11,557.4