The arithmetic mean of the 17,34,78,78,66,34,23,43 is?

Mean = \(\frac{ sum \; of \;  observations }{ number \; of \; observations }\)

Mean = \(\frac{ 17 + 34 + 78 + 78 + 66 + 34 + 23 + 43}{ 8 }\)

Mean = \(\frac{ 373 }{ 8 }\)

Mean = 46.625