Aritmetický průměr - příklady ze statistiky

Vypočtěte aritmetický průměr souboru:
{13, 50, 63, 22, 3, 68, 54, 61, 100, 87} =
{48, 63, 71, 90, 64, 13, 13, 48, 38, 68} =
{85, 97, 50, 62, 71, 65, 88, 46, 0, 45} =
{55, 46, 31, 61, 73, 47, 74, 12, 26, 68} =
{64, 4, 96, 65, 4, 31, 53, 7, 86} =
{39, 84, 9, 75, 95, 88, 27, 50, 78} =
{7, 48, 3, 4, 1, 6, 86, 2, 54, 32} =
{51, 17, 78, 87, 56, 32, 50, 44, 71} =
{44, 43, 88, 83, 6, 48, 90, 55, 51, 3} =
{97, 47, 51, 46, 35, 30, 56, 14, 64} =