a5belleyjgv a5belleyjgv
  • 17-05-2017
  • Mathematics
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If three samples have means of 10, 20, and 15, respectively, what is their grand mean?

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Nininastarr12
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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