the combined mean of two group is 57the mean of frist group is 52 and the mean of the second group is 60 find the proportional of the variation is group into groups
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Answer:
21
Step-by-step explanation:
The first , second and third groups have 2,3 and 5 items respectively.
The combined mean of three groups is 12
So,
---A
Now we are given that the combined mean of first two groups is 3
---B
A- B = Third group
Mean of third group =
Mean of third group =
Mean of third group =
Hence then mean of the third group is is 2
Step-by-step explanation:
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