FOUNDATION EXAMINATION: SEPTEMBER 2025Foundation
If there are two groups with 10 and 12 observations and harmonic mean of the two groups are 3 and 5 respectively, then the combined Harmonic mean is
A
(A) 8.0
B
(B) 2.0
C
(C) 3.8
D
(D) 4.0
If there are two groups with 10 and 12 observations and harmonic mean of the two groups are 3 and 5 respectively, then the combined Harmonic mean is
(A) 8.0
(B) 2.0
(C) 3.8
(D) 4.0