Aritmetický průměr - příklady ze statistiky

Vypočtěte aritmetický průměr souboru:
{97, 41, 32, 4, 54, 82, 2, 93, 1, 90} =
{31, 6, 43, 8, 100, 8, 69, 6, 25} =
{55, 93, 8, 49, 28, 0, 19, 74, 47, 13} =
{63, 73, 17, 70, 65, 22, 20, 23, 18} =
{21, 89, 61, 39, 10, 58, 93, 5, 53} =
{33, 10, 72, 3, 10, 40, 2, 15, 53, 94} =
{45, 42, 1, 61, 29, 55, 5, 40, 31} =
{77, 57, 36, 59, 42, 97, 98, 49, 37, 72} =
{75, 15, 44, 76, 72, 6, 57, 62, 84, 41} =
{94, 55, 50, 1, 77, 77, 11, 75, 19} =