Two distributions with 100 and 200 items have a mean of 20 and 10 respectively. The combined mean of two distributions will be:
A. 30.50
B. 10.16
C. 13.33
D. 11.12.
Answer:C
Two distributions with 100 and 200 items have a mean of 20 and 10 respectively. The combined mean of two distributions will be:
A. 30.50 B. 10.16 C. 13.33 D. 11.12.