Given a set of data x1, X2 The average of x1, X2, X3 is a, x4, X5, X6 , the average of X10 is B, then the average of this set of data is () A. a+b2B. 3a+7a10C. 7a+3b10D. a+b10

Given a set of data x1, X2 The average of x1, X2, X3 is a, x4, X5, X6 , the average of X10 is B, then the average of this set of data is () A. a+b2B. 3a+7a10C. 7a+3b10D. a+b10

.x=110(x1+x2+x3+x4+x5+… +X 10) = 110 (3a + 7b), so the average of this set of data is 7b + 3a10