A cereal factory has three machines for dispensing cereal into bags. A test is done in which 8 bags are filled by each machine and the bags are weighed.

The results in grams:

Machine 1: 309, 311.5, 313, 310, 308, 314, 312, 310.5

Machine 2: 310, 309, 314, 311, 309, 314.5, 312.5, 310

Machine 3: 309, 310.5, 313.5, 315.5, 310, 311, 312, 309.5

Which statement is true about the mean output of the three machines?

Question

A cereal factory has three machines for dispensing cereal into bags. A test is done in which 8 bags are filled by each machine and the bags are weighed.


The results in grams:




Machine 1:  309, 311.5, 313, 310, 308, 314, 312, 310.5


Machine 2:  310, 309, 314, 311, 309, 314.5, 312.5, 310


Machine 3:  309, 310.5, 313.5, 315.5, 310, 311, 312, 309.5


 


Which statement is true about the mean output of the three machines?