Practicing Success
The arithmetic mean of the 12,78,87,92 is? |
67.25 68 60.45 69 |
67.25 |
Mean = \(\frac{ sum \; of \; observations }{ number \; of \; observations }\) Mean = \(\frac{ 12 + 78 + 87 + 92 }{ 4 }\) Mean = \(\frac{ 269}{ 4 }\) Mean = 67.25 |