a5belleyjgv a5belleyjgv

17-05-2017
Mathematics

contestada

If three samples have means of 10, 20, and 15, respectively, what is their grand mean?

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Nininastarr12 Nininastarr12

17-05-2017

I believe it would be 15. 10+20+15=45/3=15

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Аноним Аноним

17-05-2017

Their grand mean would be:
10+20+15
=45
45÷3
=15

Answer Link

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