Find the mean of the following data:


x:



19



21



23



25



27



29



31



y:



13



15



16



18



16



15



13



X



y



yx



19



13



247



21



15



315



23



16



368



25



18



450



27



16



432



29



15



435



31



13



403




N = 106



yx = 2650



Mean =


= = 25


3