Average - statistics examples

Calculate average of file:
{52, 16, 13, 96, 48, 74, 53, 32, 0, 76} =
{70, 17, 40, 38, 37, 71, 94, 48, 99, 21} =
{68, 36, 10, 42, 58, 72, 97, 70, 82, 43} =
{81, 16, 82, 15, 31, 20, 20, 15, 44, 100} =
{54, 92, 89, 49, 6, 86, 72, 94, 75, 19} =
{60, 75, 5, 51, 26, 3, 96, 90, 97} =
{80, 63, 93, 15, 59, 96, 64, 86, 10} =
{16, 89, 65, 18, 92, 24, 50, 48, 78} =
{48, 88, 100, 38, 16, 20, 93, 35, 71, 89} =
{94, 42, 84, 83, 92, 37, 28, 5, 37, 51} =