The arithmetic mean of the 12,45,3,95,22,53,78 is?

42 44 46 45

44

Mean = \(\frac{ sum \; of \;  observations }{ number \; of \; observations }\) Mean = \(\frac{ 12 + 45 + 3 + 95 + 22 + 53 + 78 }{ 7 }\) Mean = \(\frac{ 308 }{ 7 }\) Mean = 44