If n1 = 100, n2 = 150,x1 = 50, x2=40,
01 = 5, 02 = 6 then combined mean is
A) 22
B) 38
C) 55
D) 44​

1 thought on “If n1 = 100, n2 = 150,x1 = 50, x2=40,<br />01 = 5, 02 = 6 then combined mean is<br />A) 22<br />B) 38<br />C) 55<br />D) 44​”

1. Answer:

   = (100 x 10 + 150 x 10.9/100 +150) = 10.54.

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