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Find the mean of 7 numbers if the mean of the first 4 numbers is 5 and the mean of the last 3 numbers is 12. What is the mean of the combined data sets?

 Feb 28, 2020

Best Answer 

 #1
avatar+108 
+3

Total sum of all the numbers is

4 * 5 = 20 and 3 * 12 = 36

20 + 36 = 56

Total mean is 56/7 = 8

 Feb 28, 2020
 #1
avatar+108 
+3
Best Answer

Total sum of all the numbers is

4 * 5 = 20 and 3 * 12 = 36

20 + 36 = 56

Total mean is 56/7 = 8

brianlaw Feb 28, 2020
 #2
avatar+111433 
0

Thanks, brian......welcome aboard......!!!

 

 

cool cool cool

CPhill  Feb 28, 2020

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