In a geometric progression: a, b, c, d... The common ratio can be obtained using: b/a = c/b = d/c b/a = 112 / 64 = 1.75 c/b = 196 / 112 = 1.75 d/c = 343 / 196 = 1.75 The common ratio = 1.75
Assuming the question is in the wrong format and"date" is data. I chose X= 10,11,16,9,7,15,16,10 and Y= <span>96,51,62,58,89,81,46,51 the correlation cooefficent is -0.3351