The mean weight of a group of 6 students is 25 kg and the mean weight of another group of 4 students is 30 kg. The combined mean weight of 10 students is
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The combined mean weight of 10 students would be 27 kgs.
1) Mean weight of group of 6 students is 25 kg i.e.
Sum of their weight would be 25*6 = 150 kg.
2) Mean weight of group of 4 students is 30 kg i.e.
Sum of their weight would be 30*4 = 120 kg.
3) The total sum of their weight would be 150+120 = 270 kg
The total number of students is 4+ 6 = 10
4) The combined mean weight of 10 students would be 270/10 = 27 kgs.
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