Aritmetický průměr - příklady ze statistiky

Vypočtěte aritmetický průměr souboru:
{72, 53, 94, 34, 48, 64, 67, 69, 26} =
{23, 49, 20, 1, 23, 62, 19, 67, 11, 27} =
{55, 79, 18, 29, 78, 67, 16, 54, 41} =
{53, 76, 87, 92, 32, 79, 33, 31, 91} =
{77, 18, 84, 99, 53, 15, 24, 87, 80, 46} =
{91, 50, 69, 91, 90, 73, 88, 95, 71, 21} =
{0, 93, 35, 4, 14, 41, 88, 53, 98} =
{35, 28, 1, 15, 68, 59, 81, 62, 66, 60} =
{64, 36, 38, 10, 90, 57, 86, 63, 24} =
{86, 71, 63, 46, 75, 80, 7, 51, 1} =